Mobile communication system, base station device, mobile station device, communication method, and integrated circuit

ABSTRACT

A mobile communication system, a base station device, a mobile station device, a communication method, and an integrated circuit that each can efficiently transmit HARQ-ACK and/or channel state information are provided. 
     A mobile station device includes means for receiving a first parameter that is used for instructing whether simultaneous transmission of information relating to HARQ-ACK and channel state information is allowed or not; and means for receiving a second parameter that is used for instructing whether simultaneous transmission of the information relating to HARQ-ACK and the channel state information is allowed or not, and controls a transmission method of the information relating to HARQ-ACK and the channel state information based on the first parameter, the second parameter, and whether or not the information relating to HARQ-ACK corresponds to transmission on a single physical downlink shared channel only on a primary cell.

TECHNICAL FIELD

The present invention relates to a mobile communication system, a basestation device, a mobile station device, a communication method, and anintegrated circuit.

BACKGROUND ART

Evolution of a radio access method and a radio network in cellularmobile communication (hereinafter, also called LTE: Long Term Evolutionor EUTRA: Evolved Universal Terrestrial Radio Access) is being studiedby 3rd Generation Partnership Project (3GPP). In LTE, an OFDM(Orthogonal Frequency Division Multiplexing) system, being multi-carriertransmission, is used as a downlink communication method from a basestation device to a mobile station device. Also, a SC-FDMA(Single-Carrier Frequency Division Multiple Access) system, beingsingle-carrier transmission, is used as an uplink communication methodfrom the mobile station device to the base station device. Herein, inLTE, the base station device is also called eNodeB (evolved NodeB), andthe mobile station device is also called UE (User Equipment).

Also, in LTE Release 10, a technology is being studied that usesmultiple serving cells having the same channel structure as those of LTERelease 8/Release 9 and that performs communication between a basestation device and a mobile station device (also called cellaggregation, carrier aggregation) (NPL 1). For example, the base stationdevice and the mobile station device perform transmission and receptionof information on multiple aggregated serving cells, in the samesub-frame, on multiple physical channels.

Further, in LTE Release 11, a technology is being studied that, whencommunication is made by using cell aggregation, a mobile station devicetransmits control information on HARQ (Hybrid Automatic Repeat Request)(hereinafter, also written as HARQ-ACK) and channel state information(CSI) by using a single physical uplink control channel (PUCCH) (NPL 2).

Herein, HARQ-ACK includes information indicative of ACK/NACK (PositiveAcknowledgement/Negative Acknowledgement) for a downlink transportblock. Also, HARQ-ACK includes information indicative of DTX(Discontinuous Transmission). Herein, DTX includes informationindicative of that a mobile station device could not detect PDCCH and/orPDSCH.

CITATION LIST Non Patent Literature

NPL 1: “Carrier aggregation in LTE-Advanced,” 3GPP TSG-RAN WG1 #53bis,R1-082468, Jun. 30-Jul. 4, 2008

NPL 2: “Views on UL control enhancements for CA,” 3GPP TSG-RAN WG1 #67,R1-113671, Nov. 14-18, 2011

SUMMARY OF INVENTION Technical Problem

However, related art has not provided specific description for theprocess when the mobile station device transmits HARQ-ACK and/or CSI.That is, related art has not described about the way of setting made bythe base station device for the mobile station device, or the way oftransmitting HARQ-ACK and/or CSI by the mobile station device.

The present invention is made in light of the situations, and provides amobile communication system, a base station device, a mobile stationdevice, a communication method, and an integrated circuit that each canefficiently transmit HARQ-ACK and/or CSI.

Solution to Problem

(1) To attain the above-described object, the present invention providesmeans as follows. In particular, there is provided a mobile stationdevice that communicates with a base station device, including means forreceiving a first parameter that is used for instructing whethersimultaneous transmission of information relating to HARQ-ACK andchannel state information is allowed or not; means for receiving asecond parameter that is used for instructing whether simultaneoustransmission of the information relating to HARQ-ACK and the channelstate information is allowed or not; and in a case that the informationrelating to HARQ-ACK and the channel state information collide with eachother in a sub-frame that is not transmitted on a physical uplink sharedchannel, based on the first parameter, the second parameter, and whetheror not the information relating to HARQ-ACK corresponds to transmissionon a single physical downlink shared channel only on a primary cell,means for determining whether the channel state information, which ismultiplexed with the information relating to HARQ-ACK, is transmitted byusing a first physical uplink control channel format, the channel stateinformation, which is multiplexed with the information relating toHARQ-ACK, is transmitted by using a second physical uplink controlchannel format, or the channel state information is dropped.

(2) Also, in the case that the information relating to HARQ-ACK and thechannel state information collide with each other in a sub-frame that isnot transmitted on the physical uplink shared channel, if simultaneoustransmission of the information relating to HARQ-ACK and the channelstate information is allowed by the first parameter, and if theinformation relating to HARQ-ACK corresponds to transmission on a singlephysical downlink shared channel only on the primary cell, the channelstate information, which is multiplexed with the information relating toHARQ-ACK, is transmitted by using the first physical uplink controlchannel format.

(3) Also, in the case that the information relating to HARQ-ACK and thechannel state information collide with each other in a sub-frame that isnot transmitted on the physical uplink shared channel, if simultaneoustransmission of the information relating to HARQ-ACK and the channelstate information is allowed by the second parameter, and if theinformation relating to HARQ-ACK corresponds to transmission on a singlephysical downlink shared channel on at least a single secondary cell,the channel state information, which is multiplexed with the informationrelating to HARQ-ACK, is transmitted by using the second physical uplinkcontrol channel format.

(4) Also, in the case that the information relating to HARQ-ACK and thechannel state information collide with each other in a sub-frame that isnot transmitted on the physical uplink shared channel, and ifsimultaneous transmission of the information relating to HARQ-ACK andthe channel state information is not allowed by the first parameter, andif simultaneous transmission of the information relating to HARQ-ACK andthe channel state information is not allowed by the second parameter,the channel state information is dropped.

(5) Also, a resource for the first physical uplink control informationformat is set by a higher layer.

(6) Also, a resource for the second physical uplink control informationformat is instructed from four resources set by a higher layer by usingdownlink control information that is transmitted on a physical downlinkcontrol channel.

(7) Also, the information relating to HARQ-ACK includes informationindicative of ACK/NACK.

(8) Also, the channel state information includes channel stateinformation that is periodically transmitted.

(9) Also, there is provided a method of a mobile station device thatcommunicates with a base station device, including receiving a firstparameter that is used for instructing whether simultaneous transmissionof information relating to HARQ-ACK and channel state information isallowed or not; receiving a second parameter that is used forinstructing whether simultaneous transmission of the informationrelating to HARQ-ACK and the channel state information is allowed ornot; and in a case that the information relating to HARQ-ACK and thechannel state information collide with each other in a sub-frame that isnot transmitted on a physical uplink shared channel, based on the firstparameter, the second parameter, and whether or not the informationrelating to HARQ-ACK corresponds to transmission on a single physicaldownlink shared channel only on a primary cell, determining whether thechannel state information, which is multiplexed with the informationrelating to HARQ-ACK, is transmitted by using a first physical uplinkcontrol channel format, the channel state information, which ismultiplexed with the information relating to HARQ-ACK, is transmitted byusing a second physical uplink control channel format, or the channelstate information is dropped.

(10) Also, there is provided an integrated circuit that is mounted on amobile station device, which communicates with a base station device,and that causes the mobile station device to execute processing, theprocessing including processing of receiving a first parameter that isused for instructing whether simultaneous transmission of informationrelating to HARQ-ACK and channel state information is allowed or not;processing of receiving a second parameter that is used for instructingwhether simultaneous transmission of the information relating toHARQ-ACK and the channel state information is allowed or not; and in acase that the information relating to HARQ-ACK and the channel stateinformation collide with each other in a sub-frame that is nottransmitted on a physical uplink shared channel, based on the firstparameter, the second parameter, and whether or not the informationrelating to HARQ-ACK corresponds to transmission on a single physicaldownlink shared channel only on a primary cell, processing ofdetermining whether the channel state information, which is multiplexedwith the information relating to HARQ-ACK, is transmitted by using afirst physical uplink control channel format, the channel stateinformation, which is multiplexed with the information relating toHARQ-ACK, is transmitted by using a second physical uplink controlchannel format, or the channel state information is dropped.

Advantageous Effects of Invention

With the present invention, HARQ-ACK and/or channel state informationcan be efficiently transmitted.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a conceptual illustration showing a physical channelconfiguration according to this embodiment.

FIG. 2 is a block diagram showing a general configuration of a basestation device according to this embodiment.

FIG. 3 is a block diagram showing a general configuration of a mobilestation device according to this embodiment.

FIG. 4 is an illustration showing an example of a mobile communicationsystem applicable to this embodiment.

FIG. 5 is an illustration explaining this embodiment.

FIG. 6 is another illustration explaining this embodiment.

FIG. 7 is still another illustration explaining this embodiment.

DESCRIPTION OF EMBODIMENTS

An embodiment according to the present invention is described next withreference to the drawings. FIG. 1 is an illustration showing an exampleof a physical channel configuration according to this embodiment. Aphysical channel is allocated on a physical resource block that isdefined by time domain/frequency domain.

As shown in FIG. 1, downlink physical channels include Physical DownlinkControl Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), etc.Also, uplink physical channels include Physical Uplink Shared Channel(PDSCH), Physical Uplink Control Channel (PUCCH), etc.

Herein, PDCCH is a physical channel used for transmitting (notifying,designating) Downlink Control Information (DCI), such as downlinkscheduling information (downlink assignment) and uplink schedulinginformation (uplink grant). Herein, PDCCH may be multiplexed with PDSCHby TDM (Time Division Multiplexing). Alternatively, PDCCH may bemultiplexed with PDSCH by FDM (Frequency Division Multiplexing). Forexample, PDCCH multiplexed with PDSCH by FDM is also called E-PDCCH(Enhanced-PDCCH); however, hereinafter, PDCCH includes E-PDCCH.

Also, when the downlink control information is transmitted, multipleformats are defined. Herein, the format that is used for transmission ofthe downlink control information is also called DCI format (DownlinkControl Information format).

For example, a DCI format 1 is used for scheduling a single PDSCH on asingle downlink cell in a single-antenna port transmission mode. Also, aDCI format 2 is used for scheduling a single PDSCH on a single downlinkcell in a multi-antenna port mode. That is, the DCI format 1 and the DCIformat 2 are downlink assignments used for scheduling PDSCH.

That is, for example, in the DCI format 1 and the DCI format 2, aninformation field (also called field that is mapped to information bit),such as Resource block assignment for PDSCH and Modulation and CodingScheme (MCS) for PDSCH (downlink transport block that is transmitted onPDSCH, is defined. Herein, a single downlink assignment includesscheduling information for a single PDSCH on a cell.

Also, for example, a DCI format 0 is used for scheduling a single PDSCHon a single uplink cell in the single-antenna port transmission mode.Also, a DCI format 4 is used for scheduling a single PUSCH on a singleuplink cell in the multi-antenna port mode. That is, the DCI format 0and the DCI format 4 are uplink grants used for scheduling PUSCH.

That is, for example, in the DCI format 0 and the DCI format 4, aninformation field, such as Resource block assignment for PUSCH andModulation and Coding Scheme (MCS) for PUSCH (uplink transport blockthat is transmitted on PUSCH), is defined. Herein, a single uplinkassignment includes scheduling information for a single PUSCH on a cell.

If a mobile station device receives resource assignment of PDSCH onPDCCH to the mobile station device, the mobile station device uses PDSCHaccording to the instructed resource assignment, and receives a downlinksignal (transport block for downlink data (Downlink Shared Channel(DL-SCH))) by using PDSCH.

Also, if the mobile station device receives resource assignment of PUSCHon PDCCH to the device, the mobile station device uses PUSCH accordingto the instructed resource assignment, and transmits an uplink signal(transport block for uplink data (Uplink Shared Channel (UL-SCH)))and/or uplink control data (uplink control information) by using PUSCH.

Also, PDSCH is a channel that is used for transmitting downlink data(transport block for downlink shared channel (DL-SCH)) or paginginformation (transport block for Paging Channel (PCH)). A base stationdevice transmits downlink data to the mobile station device by PDSCHassigned by using PDCCH.

Herein, downlink data represents, for example, user data, and DL-SCH isa transport channel. Herein, a downlink transport block is a unit usedin a MAC (Medium Access Control) layer. Also, the downlink transportblock is associated with a cord word in a Physical layer. That is, thedownlink transport block is a unit of data that is delivered from theMAC layer to the physical layer.

Further, PUSCH is a physical channel that is mainly used fortransmitting uplink data (transport block for uplink shared channel(UL-SCH)). The mobile station device transmits uplink data to the basestation device on PUSCH assigned by using PDCCH. Also, if the basestation device schedules PUSCH (PUSCH resource) for the mobile stationdevice, Uplink Control Information (UCI) is also transmitted by usingPUSCH.

Herein, uplink data represents, for example, user data, and UL-SCH is atransport channel. Herein, an uplink transport block is a unit used inthe MAC layer. Also, the uplink transport block is associated with acord word in the physical layer. That is, the uplink transport block isa unit of data that is delivered from the MAC layer to the physicallayer.

Also, PUCCH is a physical channel that is used for transmitting uplinkcontrol information. Herein, the uplink control information includesHARQ-ACK. Also, the uplink control information includes CSI. Further,CSI includes Channel Quality Indicator (CQI), Pre-coding MatrixIndicator (PMI), and Rank Indication (RI). Also, the uplink controlinformation includes Scheduling Request (SR) that is used for requestingassignment of a resource for transmission of uplink data by the mobilestation device.

Herein, multiple formats are defined (supported) for PUCCH. Also, aformat supported for PUCCH (a format supported by PUCCH) is called PUCCHformat.

For example, on-off-keying as a modulation method is applied to a PUCCHformat 1. For example, by using the PUCCH format 1, the mobile stationdevice can transmit the scheduling request.

Also, for example, BPSK (Binary Phase Shift Keying) as a modulationmethod is applied to a PUCCH format 1 a. For example, by using the PUCCHformat 1 a, the mobile station device can transmit HARQ-ACK of 1 bit persub-frame. Also, by using the PUCCH format 1 a, the mobile stationdevice can transmit HARQ-ACK corresponding to a single cell(hereinafter, also written as single HARQ-ACK).

Herein, HARQ-ACK corresponding to a single cell includes HARQ-ACKcorresponding to a downlink transport block that is transmitted on asingle cell (single cell PDSCH). Herein, for example, the base stationdevice can set a downlink transmission mode in each serving cell for themobile station device. For example, if the base station device sets adownlink transmission mode that can transmit a single downlink transportblock, by using PDSCH, the base station device transmits the singledownlink transport block. For example, if a mode, in which a singledownlink transport block can be transmitted, is set, the mobile stationdevice can transmit HARQ-ACK of 1 bit corresponding to a single cell.

Also, for example, QPSK (Quadrature Phase Shift Keying) as a modulationmethod is applied to a PUCCH format 1 b. For example, by using the PUCCHformat 1 b, the mobile station device can transmit HARQ-ACK of 2 bitsper sub-frame. For example, by using the PUCCH format 1 b, the mobilestation device can transmit HARQ-ACK corresponding to a single cell.

Herein, if the base station device sets a downlink transmission modethat can transmit two downlink transport blocks at maximum, by usingPDSCH, the base station device can transmit two downlink transportblocks at maximum. For example, if a mode, in which two downlinktransport blocks can be transmitted, is set, and if the mobile stationdevice receives the two downlink transport blocks, the mobile stationdevice can transmit HARQ-ACK of 2 bits corresponding to a single cell.

Also, QPSK as a modulation method is applied to a PUCCH format 2. Forexample, by using the PUCCH format 2, the mobile station device cantransmit CSI corresponding to a single cell (hereinafter, also writtenas single CSI). Also, for example, by using the PUCCH format 2, themobile station device can simultaneously transmit CSI corresponding to asingle cell and HARQ-ACK corresponding to a single cell. That is, byusing the PUCCH format 2, the mobile station device can transmit CSImultiplexed with HARQ-ACK.

Herein, CSI corresponding to a single cell includes CSI for a downlinksignal transmitted on a single cell (for example, PDSCH or downlinktransport block). Herein, for example, the base station device can set areport mode of CSI for each cell for the mobile station device.

Also, for example, convolutional coding as a coding method is applied tothe PUCCH format 2. Herein, for example, by applying convolutionalcoding, a coded bit sequence of 20 bits is generated. For example, byusing the PUCCH format 2, the mobile station device can transmit codedbits (information) of 20 bits per sub-frame.

Also, QPSK and BPSK (QPSK+BPSK) as modulation methods are applied to aPUCCH format 2 a. For example, by using the PUCCH format 2 a, the mobilestation device can simultaneously transmit CSI corresponding to a singlecell (for example, QPSK is applied) and HARQ-ACK of 1 bit (for example,BPSK is applied). That is, by using the PUCCH format 2 a, the mobilestation device can transmit CSI multiplexed with HARQ-ACK of 1 bit. Forexample, by using the PUCCH format 2 a, the mobile station device cantransmit coded bits (information) of 21 bits per sub-frame.

Also, QPSK and QPSK (QPSK+QPSK) as modulation methods are applied to aPUCCH format 2 b. For example, by using the PUCCH format 2 b, the mobilestation device can transmit CSI corresponding to a single cell (forexample, QPSK is applied) and HARQ-ACK of 2 bits (for example, QPSK isapplied). That is, by using the PUCCH format 2 b, the mobile stationdevice can transmit CSI multiplexed with HARQ-ACK of 2 bits. Forexample, by using the PUCCH format 2 b, the mobile station device cantransmit coded bits (information) of 22 bits per sub-frame.

Also, for example, QPSK as a modulation method is applied to a PUCCHformat 3. For example, by using the PUCCH format 3, the mobile stationdevice can transmit HARQ-ACK corresponding to a single cell or multiplecells (hereinafter, also written as multiple HARQ-ACK) and/or CSIcorresponding to a single cell or multiple cells (hereinafter, alsowritten as “multiple CSI”).

That is, by using the PUCCH format 3, the mobile station device cansimultaneously transmit HARQ-ACK corresponding to a single cell ormultiple cells (for example, HARQ-ACK of 10 bits) and CSI correspondingto a single cell or multiple cells (for example, CSI of 10 bits). Thatis, by using the PUCCH format 3, the mobile station device can transmitCSI corresponding to a single cell or multiple cells multiplexed withHARQ-ACK corresponding to a single cell or multiple cells.

Also, by using the PUCCH format 3, the mobile station device cantransmit only HARQ-ACK corresponding to a single cell or multiple cells.Also, by using the PUCCH format 3, the mobile station device cantransmit only CSI corresponding to a single cell or multiple cells.

Herein, HARQ-ACK corresponding to multiple cells includes HARQ-ACKcorresponding to downlink transport blocks that are transmitted on therespective multiple cells (PDSCH of multiple cells). That is, HARQ-ACKcorresponding to multiple cells includes HARQ-ACK by a predeterminednumber at maximum corresponding to cells by a predetermined number atmaximum (PDSCH of cells by a predetermined number at maximum).

Also, CSI corresponding to multiple cells includes CSI corresponding torespective downlink signals transmitted on multiple cells (for example,PDSCH or downlink transport blocks). That is, CSI corresponding tomultiple cells includes CSI by a predetermined number at maximumcorresponding to cells by a predetermined number at maximum.

Also, for example, by using the PUCCH format 3, the mobile stationdevice can transmit HARQ-ACK corresponding to multiple cells, CSIcorresponding to multiple cells, and a scheduling request (in amultiplexed manner). Also, for example, block coding as a coding methodis applied to the PUCCH format 3. Herein, for example, by applying blockcoding, a coded bit sequence of 48 bits is generated. For example, byusing the PUCCH format 3, the mobile station device can transmit codedbits (information) of 48 bits per sub-frame.

Also, for example, by using the PUCCH format 3, if the mobile stationdevice transmits only CSI corresponding to multiple cells, the mobilestation device can transmit CSI of 22 bits at maximum. Also, forexample, by using the PUCCH format 3, if the mobile station devicetransmits only HARQ-ACK (or only HARQ-ACK and scheduling request), themobile station device can transmit HARQ-ACK (or HARQ-ACK and schedulingrequest) by 22 bits at maximum. That is, for example, by using the PUCCHformat 3, the mobile station device can transmit uplink controlinformation by 22 bits at maximum.

Herein, by using the PUCCH format 3, the mobile station device maytransmit only HARQ-ACK corresponding to a single cell or multiple cells,and by using a PUCCH format having a structure similar to the PUCCHformat 3 (for example, PUCCH format 4), the mobile station device maytransmit HARQ-ACK corresponding to a single cell or multiple cellsand/or CSI corresponding to a single cell or multiple cells.

Hereinafter, description is basically given such that the mobile stationdevice transmits HARQ-ACK corresponding to a single cell or multiplecells and/or CSI corresponding to a single cell or multiple cells byusing the PUCCH format 3. However, of course, a similar embodiment maybe applied to a case in which the mobile station device transmitsHARQ-ACK corresponding to a single cell or multiple cells and/or CSIcorresponding to a single cell or multiple cells by using a PUCCH formathaving a structure similar to the PUCCH format 3.

Further, the base station device and the mobile station device exchange(transmit and receive) a signal in a higher layer. For example, the basestation device and the mobile station device transmit and receive aradio resource control signal (also called RRC signaling: Radio ResourceControl signaling, RRC message: Radio Resource Control message, or RRCinformation: Radio Resource Control information) in a Radio ResourceControl (RRC) layer.

Herein, in the RRC layer, a dedicated signal that is transmitted by thebase station device to a certain mobile station device is also calleddedicated signal (dedicated signal for certain mobile station device).That is, setting (information) that is designated by the base stationdevice with use of the dedicated signal is setting specific to thecertain mobile station device (UE-specific). Also, the base stationdevice and the mobile station device transmit and receive a MAC controlelement in a MAC (Medium Access Control) layer. Herein, the RRCsignaling and/or the MAC control element are also called Higher layersignaling.

Configuration of Base Station Device

FIG. 2 is a block diagram showing a general configuration of a basestation device 100 according to this embodiment. The base station device100 includes a data control unit 101, a transmission data modulatingunit 102, a radio unit 103, a scheduling unit 104, a channel estimatingunit 105, a reception data demodulating unit 106, a data extracting unit107, a higher layer 108, and an antenna 109. Also, the radio unit 103,the scheduling unit 104, the channel estimating unit 105, the receptiondata demodulating unit 106, the data extracting unit 107, the higherlayer 108, and the antenna 109 form a receiving unit; and the datacontrol unit 101, the transmission data modulating unit 102, the radiounit 103, the scheduling unit 104, the higher layer 108, and the antenna109 form a transmitting unit. Herein, the respective units forming thebase station device 100 are also called units.

The antenna 109, the radio unit 103, the channel estimating unit 105,the reception data demodulating unit 106, and the data extracting unit107 perform processing for an uplink physical layer. The antenna 109,the radio unit 103, the transmission data modulating unit 102, and thedata control unit 101 perform processing for a downlink physical layer.

The data control unit 101 receives a transport channel from thescheduling unit 104. The data control unit 101 maps the transportchannel, and a signal and a channel generated in the physical layer,onto a physical channel based on scheduling information input from thescheduling unit 104. Each data mapped as described above is output tothe transmission data modulating unit 102.

The transmission data modulating unit 102 modulates transmission data toOFDM system. The transmission data modulating unit 102 performs signalprocessing, such as coding, series/parallel conversion of an inputsignal, IFFT (Inverse Fast Fourier Transform) processing, CP (CyclicPrefix) insertion, and filtering, on the data input from the datacontrol unit 101, based on the scheduling information from thescheduling unit 104, and a modulation method and a coding methodcorresponding to each Physical Resource Block (PRB), generatestransmission data, and outputs the data to the radio unit 103.

Herein, the scheduling information includes PRB assignment information,for example, positional information of PRB formed of frequency and time.The modulation method and coding method corresponding to each PRBinclude information, for example, a modulation method of 16QAM and acoding rate of 2/3.

The radio unit 103 generates a radio signal by up-converting modulateddata input from the transmission data modulating unit 102 into a radiofrequency, and transmits the radio signal to a mobile station device 200through the antenna 109. Also, the radio unit 103 receives an uplinkradio signal from the mobile station device 200 through the antenna 109,down-converts the uplink radio signal into a baseband signal, andoutputs reception data to the channel estimating unit 105 and thereception data demodulating unit 106.

The scheduling unit 104 performs processing for the MAC layer. Thescheduling unit 104 performs mapping of the logical channel and thetransport channel, scheduling for downlink and uplink (HARQ processing,selection of transport format, etc.) and so forth. Since the schedulingunit 104 converges and controls processing units of respective physicallayers, an interface is present between the scheduling unit 104, and theantenna 109, the radio unit 103, the channel estimating unit 105, thereception data demodulating unit 106, the data control unit 101, thetransmission data modulating unit 102, and the data extracting unit 107.

For downlink scheduling, the scheduling unit 104 performs selectionprocessing for a downlink transport format (transmission form, that is,assignment of PRB, modulation method, coding method) for modulating eachdata, re-transmission control in HARQ, and generation of schedulinginformation that is used for downlink, based on, for example, uplinkcontrol information received from the mobile station device 200,information of PRB that can be used in each mobile station device 200, abuffer status, and scheduling information input from the higher layer108. The scheduling information that is used for downlink scheduling isoutput to the data control unit 101.

Also, for uplink scheduling, the scheduling unit 104 performs selectionprocessing for an uplink transport format (transmission form, that is,assignment of PRB, modulation method, coding method) for modulating eachdata and generation of scheduling information that is used for uplink,based on, for example, an expectation result for an uplink channel state(radio propagation path state) output from the channel estimating unit105, a resource assignment request from the mobile station device 200,information of PRB that can be used in each mobile station device 200,and scheduling information input from the higher layer 108. Thescheduling information that is used for uplink scheduling is output tothe data control unit 101.

Also, the scheduling unit 104 maps the downlink logical channel inputfrom the higher layer 108 onto a transport channel, and outputs theresult to the data control unit 101. Also, the scheduling unit 104processes the control data and transport channel acquired in uplink andinput from the data extracting unit 107 if required, maps the controldata and transport channel onto an uplink logical channel, and outputsthe result to the higher layer 108.

The channel estimating unit 105 estimates an uplink channel state froman Uplink Demodulation Reference Signal (UDRS) and outputs theestimation result to the reception data demodulating unit 106 fordemodulation of uplink data. Also, for performing uplink scheduling, thechannel estimating unit 105 estimates an uplink channel state from anuplink Sounding Reference Signal (SRS) and outputs the estimation resultto the scheduling unit 104.

The reception data demodulating unit 106 serves as an OFDM demodulatingunit and/or a DFT-Spread-OFDM (DFT-S-OFDM) demodulating unit thatdemodulate reception data, which has been modulated in the OFDM systemand/or SC-FDMA system. The reception data demodulating unit 106 performsdemodulating processing by providing signal processing, such as DFTconversion, sub-carrier mapping, IFFT conversion, and filtering, on themodulated data input from the radio unit 103 based on the uplink channelstate estimation result input from the channel estimating unit 105, andoutputs the result to the data extracting unit 107.

The data extracting unit 107 checks correctness and incorrectness of thedata input from the reception data demodulating unit 106, and outputsthe check result (ACK or NACK) to the scheduling unit 104. Also, thedata extracting unit 107 separates the data input from the receptiondata demodulating unit 106 into a transport channel and control data inthe physical layer, and outputs the result to the scheduling unit 104.The separated control data includes control information in CSI and HARQand a scheduling request transmitted from the mobile station device 200.

The higher layer 108 performs processing of a packet Data ConvergenceProtocol (PDCP) layer, a Radio Link Control (RLC) layer, and a RadioResource Control (RRC) layer. Since the higher layer 108 converges andcontrols processing units of a lower layer, an interface is presentbetween the higher layer 108, and the scheduling unit 104, the antenna109, the radio unit 103, the channel estimating unit 105, the receptiondata demodulating unit 106, the data control unit 101, the transmissiondata modulating unit 102, and the data extracting unit 107.

The higher layer 108 includes a radio resource control unit 110 (alsocalled control unit). Also, the radio resource control unit 110performs, for example, management of various setting information,management of system information, paging control, management of acommunication state of each mobile station device 200, mobile managementsuch as handover, management of a buffer status of each mobile stationdevice 200, management of connection setting of unicast and multicastbearers, and management of mobile station identifier (UEID). The higherlayer 108 gives and receives information to and from another basestation device 100 and information to and from a higher node.

Configuration of Mobile Station Device

FIG. 3 is a block diagram showing a general configuration of the mobilestation device 200 according to this embodiment. The mobile stationdevice 200 includes a data control unit 201, a transmission datamodulating unit 202, a radio unit 203, a scheduling unit 204, a channelestimating unit 205, a reception data demodulating unit 206, a dataextracting unit 207, a higher layer 208, and an antenna 209. Also, thedata control unit 201, the transmission data modulating unit 202, theradio unit 203, the scheduling unit 204, the higher layer 208, and theantenna 209 form a transmitting unit; and the radio unit 203, thescheduling unit 204, the channel estimating unit 205, the reception datademodulating unit 206, the data extracting unit 207, the higher layer208, and the antenna 209 form a receiving unit. Herein, the respectiveunits forming the mobile station device 200 are also called units.

The data control unit 201, the transmission data modulating unit 202,and the radio unit 203 perform processing for an uplink physical layer.The radio unit 203, the channel estimating unit 205, the reception datademodulating unit 206, and the data extracting unit 207 performprocessing for a downlink physical layer.

The data control unit 201 receives a transport channel from thescheduling unit 204. The data control unit 201 maps the transportchannel, and a signal and a channel generated in the physical layer,onto a physical channel based on scheduling information input from thescheduling unit 204. Each data mapped as described above is output tothe transmission data modulating unit 202.

The transmission data modulating unit 202 modulates transmission datainto OFDM system and/or SC-FDMA system. The transmission data modulatingunit 202 performs signal processing, such as data modulation, DFT(discrete Fourier transform) processing, sub-carrier mapping, IFFT(inverted fast Fourier transform) processing, CP insertion, andfiltering, on the data input from the control unit 201, generatestransmission data, and outputs the transmission data to the radio unit203.

The radio unit 203 generates a radio signal by up-converting modulateddata input from the transmission data modulating unit 202 into a radiofrequency, and transmits the radio signal to the base station device 100through the antenna 209. Also, the radio unit 203 receives a modulateddownlink radio signal from the base station device 100 through theantenna 209, down-converts the downlink radio signal into a basebandsignal, and outputs reception data to the channel estimating unit 205and the reception data demodulating unit 206.

The scheduling unit 204 performs processing for the MAC layer. Thescheduling unit 104 performs mapping of a logical channel and atransport channel, scheduling for downlink and uplink (HARQ processing,selection of transport format, etc.) and so forth. Since the schedulingunit 204 converges and controls processing units of each physical layer,an interface is present between the scheduling unit 204, and the antenna209, the data control unit 201, the transmission data modulating unit202, the channel estimating unit 205, the reception data demodulatingunit 206, the data extracting unit 207, and the radio unit 203.

For downlink scheduling, the scheduling unit 204 performs receptioncontrol for a transport channel, a physical signal, and a physicalchannel, HARQ re-transmission control, and generation of schedulinginformation that is used for downlink scheduling, based on schedulinginformation (transport format, HARQ re-transmission information) fromthe base station device 100 and the higher layer 208. The schedulinginformation that is used for downlink scheduling is output to the datacontrol unit 201.

For uplink scheduling, the scheduling unit 204 performs schedulingprocessing for mapping an uplink logical channel input from the higherlayer 208 onto a transport channel, and generation of schedulinginformation that is used for uplink scheduling, based on an uplinkbuffer status input from the higher layer 208, uplink schedulinginformation (transport format, HARQ re-transmission information) fromthe base station device 100 input from the data extracting unit 207,scheduling information input from the higher layer 208, and so forth.For the uplink transport format, information notified from the basestation device 100 is used. The scheduling information is output to thedata control unit 201.

Also, the scheduling unit 204 maps the uplink logical channel input fromthe higher layer 208 onto a transport channel, and outputs the result tothe data control unit 201. Also, the scheduling unit 204 outputs channelstate information input from the channel estimating unit 205 and thecheck result for CRC (Cyclic Redundancy Check) input from the dataextracting unit 207, to the data control unit 201. Also, the schedulingunit 204 processes the control data and transport channel acquired indownlink input from the data extracting unit 207 if required, maps thecontrol data and transport channel onto a downlink logical channel, andoutputs the result to the higher layer 208.

The channel estimating unit 205 estimates a downlink channel state froma downlink reference signal and outputs the estimation result to thereception data demodulating unit 206 for demodulation of downlink data.Also, for notifying the base station device 100 about the estimationresult of the downlink channel state, the channel estimating unit 205estimates the downlink channel state from the downlink reference signal,and outputs the estimation result as channel state information to thescheduling unit 204.

The reception data demodulating unit 206 demodulates reception data,which has been modulated to OFDM system. The reception data demodulatingunit 206 performs demodulation processing on modulation data input fromthe radio unit 203 based on the downlink channel state estimation resultinput from the channel estimating unit 205, and outputs the result tothe data extracting unit 207.

The data extracting unit 207 performs CRC to checkcorrectness/incorrectness of data input from the reception datademodulating unit 206, and outputs the check result (informationindicative of ACK or NACK) to the scheduling unit 204. Also, the dataextracting unit 207 separates the data input from the reception datademodulating unit 206 into a transport channel and control data in aphysical layer, and outputs the result to the scheduling unit 204. Theseparated control data includes scheduling information, such as downlinkor uplink resource assignment and uplink HARQ control information.

The higher layer 208 performs processing of a Packet Data ConvergenceProtocol (PDCP) layer, a Radio Link Control (RLC) layer, and a RadioResource Control (RRC) layer. Since the higher layer 208 converges andcontrols processing units of a lower layer, an interface is presentbetween the higher layer 208, and the scheduling unit 204, the antenna209, the data control unit 201, the transmission data modulating unit202, the channel estimating unit 205, the reception data demodulatingunit 206, the data extracting unit 207, and the radio unit 203.

The higher layer 208 includes a radio resource control unit 210 (alsocalled control unit). The radio resource control unit 210 performs, forexample, management of various setting information, management of systeminformation, paging control, management of a communication state of themobile station device 200, mobile management such as handover,management of a buffer status, management of connection setting ofunicast and multicast bearers, and management of mobile stationidentifier (UEID).

Regarding Cell Aggregation (Carrier Aggregation)

FIG. 4 is an illustration explaining cell aggregation (or carrieraggregation) according to this embodiment. In this embodiment, cellaggregation is supported in uplink and downlink, and each serving cellmay have, for example, a transmission bandwidth of 110 resource blocksat maximum.

FIG. 4 shows that three serving cells (serving cell 1, serving cell 2,serving cell 3) are aggregated. Herein, a serving cell in downlink isalso called downlink cell. Also, the serving cell in uplink is alsocalled uplink cell. Herein, the serving cell may be merely called cell.

In FIG. 4, the base station device sets a single or a set of multipleserving cells, which may be used for communication (to which PDCCHand/or PDSCH and/or PUSCH may be assigned), for the mobile stationdevice. For example, the base station device sets a set of serving cellsfor the mobile station device by using RRC signaling.

Herein, in FIG. 4, for example, a single serving cell among theaggregated multiple serving cells is defined as a Primary cell (Pcell).For example, the primary cell is defined as the serving cell having afunction equivalent to a cell of LTE Release 8/Release 9.

Also, the primary cell is defined as a cell on which the mobile stationdevice performs an initial connection establishment procedure. Also, theprimary cell is defined as a cell from which the mobile station deviceinitiates a connection re-establishment procedure. Also, the primarycell is defined as a cell to which the mobile station device isinstructed as the primary cell in a handover procedure.

Herein, for example, the base station device can instruct the primarycell to the mobile station device by using RRC signaling. Also, theprimary cell is defined as a cell to which the mobile station devicetransmits uplink control information by using PUCCH. That is, PUCCH maybe allocated only on the primary cell.

Also, in FIG. 4, serving cells excluding the primary cell is defined asSecondary cells (Scell). Each secondary cell is mainly used forproviding an additional radio resource to the mobile station device, andis used for transmission and reception of information on PDSCH, PUSCH,or PRACH. For example, the base station device can instruct a secondarycell to the mobile station device by using RRC signaling. Also, forexample, the base station device can instruct addition/removal of thesecondary cell to the mobile station device by using RRC signaling.

Herein, a carrier corresponding to the serving cell in downlink isdefined as Downlink Component Carrier (DLCO). Also, a carriercorresponding to the serving cell in uplink is defined as UplinkComponent Carrier (ULCC).

Also, a carrier corresponding to the primary cell in downlink is definedas Downlink Primary Component Carrier (DLPCC). Also, a carriercorresponding to the secondary cell in downlink is defined as DownlinkSecondary Component Carrier (DLSCC).

Also, a carrier corresponding to the primary cell in uplink is definedas Uplink Primary Component Carrier (ULPCC). Further, a carriercorresponding to the secondary cell in uplink is defined as UplinkSecondary Component Carrier (ULSCC).

First Embodiment

Next, this embodiment in a mobile communication system using the basestation device 100 and the mobile station device 200 is described. Inthis embodiment, the base station device transmits a first parameterrelating to simultaneous transmission of HARQ-ACK and CSI and a secondparameter relating to simultaneous transmission of HARQ-ACK and CSI tothe mobile station device. Also, if the mobile station device transmitsHARQ-ACK corresponding to transmission of a single PDSCH only on theprimary cell, the mobile station device transmits HARQ-ACK and/or CSI tothe base station device according to the first parameter. Also, if themobile station device transmits HARQ-ACK corresponding to transmissionof a single PDSCH on the secondary cell, the mobile station devicetransmits HARQ-ACK and/or CSI to the base station device according tothe second parameter.

Also, the base station device transmits a first parameter relating tosimultaneous transmission of HARQ-ACK and CSI and a second parameterrelating to simultaneous transmission of HARQ-ACK and CSI to the mobilestation device. Also, if the mobile station device transmits HARQ-ACKcorresponding to transmission of a single PDSCH only on the primarycell, the mobile station device transmits HARQ-ACK and/or CSI to thebase station device according to the first parameter. Also, if themobile station device transmits HARQ-ACK corresponding to transmissionof a single PDSCH on at least a single secondary cell, the mobilestation device transmits HARQ-ACK and/or CSI to the base station deviceaccording to the second parameter.

Also, the base station device transmits a first parameter relating tosimultaneous transmission of HARQ-ACK and CSI and a second parameterrelating to simultaneous transmission of HARQ-ACK and CSI to the mobilestation device. Also, if the mobile station device detects, in a singlePDSCH, downlink control information that instructs transmission of asingle PDSCH only on the primary cell, the mobile station devicetransmits HARQ-ACK and/or CSI to the base station device according tothe first parameter. Also, if the mobile station device detects, in asingle PDCCH, downlink control information that instructs transmissionof a single PDSCH on the secondary cell, the mobile station devicetransmits HARQ-ACK and/or CSI to the base station device according tothe second parameter.

Also, the base station device transmits a first parameter relating tosimultaneous transmission of HARQ-ACK and CSI and a second parameterrelating to simultaneous transmission of HARQ-ACK and CSI to the mobilestation device. Also, if the mobile station device detects, in a singlePDCCH, downlink control information that instructs transmission of asingle PDSCH only on the primary cell, the mobile station devicetransmits HARQ-ACK and/or CSI to the base station device according tothe first parameter. Also, if the mobile station device detects, inPDCCH, downlink control information that instructs transmission of asingle PDSCH on at least a single secondary cell, the mobile stationdevice transmits HARQ-ACK and/or CSI to the base station deviceaccording to the second parameter.

Herein, HARQ-ACK includes information indicative of ACK/NACK for adownlink transport block. Also, HARQ-ACK includes information indicativeof DTX. Also, CSI includes CSI (periodic CSI report) that isperiodically transmitted (reported) by the mobile station device.

Herein, for example, the base station device transmits the firstparameter to the mobile station device by using the higher layer signal(for example, the dedicated signal). Also, the base station devicetransmits the second parameter to the mobile station device by using thehigher layer signal (for example, the dedicated signal).

Herein, the first parameter includes a parameter relating tosimultaneous transmission of HARQ-ACK corresponding to a single cell andCSI corresponding to a single cell. That is, the first parameterincludes a parameter relating to simultaneous transmission of HARQ-ACKfor a downlink transport block that is transmitted on a single cell andCSI for a downlink signal that is transmitted on a single cell. That is,the base station device can set by using the first parameter, in themobile station device, whether or not simultaneous transmission ofHARQ-ACK corresponding to a single cell and CSI corresponding to asingle cell is allowed. That is, the first parameter is used for aninstruction to the mobile station device whether or not simultaneoustransmission of HARQ-ACK corresponding to a single cell and CSIcorresponding to a single cell is allowed.

Also, for example, the first parameter includes a parameter relating tosimultaneous transmission of HARQ-ACK corresponding to a single cell andCSI corresponding to a single cell using the PUCCH format 2/2 a/2 b(PUCCH format 2, PUCCH format 2 a, or PUCCH format 2 b). That is, thebase station device can set, in the mobile station device, simultaneoustransmission of HARQ-ACK corresponding to a single cell and CSIcorresponding to a single cell using the PUCCH format 2/2 a/2 b. Thatis, the first parameter is used for an instruction to the mobile stationdevice whether or not simultaneous transmission of HARQ-ACKcorresponding to a single cell and CSI corresponding to a single cellusing the PUCCH format 2/2 a/2 b is allowed.

Herein, for example, the base station device sets the first parameter atTRUE if simultaneous transmission of HARQ-ACK corresponding to a singlecell and CSI corresponding to a single cell is allowed. Also, the basestation device sets the first parameter at FALSE if simultaneoustransmission of HARQ-ACK corresponding to a single cell and CSIcorresponding to a single cell is not allowed. That is, the firstparameter is used for instructing setting of simultaneous transmissionof HARQ-ACK corresponding to a single cell and CSI corresponding to asingle cell. Hereinafter, the first parameter is also written as“simultaneousAckNackAndCQI.”

For example, if the first parameter is set at TRUE, the mobile stationdevice can simultaneously transmit HARQ-ACK corresponding to a singlecell and CSI corresponding to a single cell. Also, if the firstparameter is set at TRUE, the mobile station device can transmitHARQ-ACK corresponding to a single cell and CSI corresponding to asingle cell by using the PUCCH format 2/2 a/2 b. Also, if the firstparameter is set at TRUE, the mobile station device can transmitHARQ-ACK corresponding to a single cell and CSI corresponding to asingle cell by using a n (2)PUCCH resource (described later).

Also, for example, if the first parameter is set at FALSE, the mobilestation device drops CSI corresponding to a single cell (does nottransmit CSI corresponding to a single cell), and can transmit onlyHARQ-ACK corresponding to a single cell. Also, if the first parameter isset at FALSE, the mobile station device can transmit only HARQ-ACKcorresponding to a single cell by using the PUCCH format 1 a/1 b. Also,if the first parameter is set at FALSE, the mobile station device cantransmit only HARQ-ACK corresponding to a single cell by using an(1)PUCCH resource (described later).

Also, the second parameter includes a parameter relating to simultaneoustransmission of HARQ-ACK corresponding to a single cell or multiplecells and CSI corresponding to a single cell or multiple cells. That is,the second parameter includes a parameter relating to simultaneoustransmission of HARQ-ACK for a downlink transport block transmitted on asingle cell or multiple cells and CSI for a downlink signal transmittedon a single cell or multiple cells. That is, the base station device canset by using the second parameter, in the mobile station device, whetheror not simultaneous transmission of HARQ-ACK corresponding to a singlecell or multiple cells and CSI corresponding to a single cell ormultiple cells is allowed. That is, the second parameter is used for aninstruction to the mobile station device whether or not simultaneoustransmission of HARQ-ACK corresponding to a single cell or multiplecells and CSI corresponding to a single cell or multiple cells isallowed.

Also, the second parameter includes a parameter relating to simultaneoustransmission of HARQ-ACK corresponding to a single cell or multiplecells and CSI corresponding to a single cell or multiple cells using thePUCCH format 3. That is, the base station device can set, in the mobilestation device, simultaneous transmission of HARQ-ACK corresponding to asingle cell or multiple cells and CSI corresponding to a single cell ormultiple cells using the PUCCH format 3. That is, the second parameteris used for an instruction to the mobile station device whether or notsimultaneous transmission of HARQ-ACK corresponding to a single cell ormultiple cells and CSI corresponding to a single cell or multiple cellsusing the PUCCH format 3 is allowed.

Herein, for example, the base station device sets the second parameterat TRUE if simultaneous transmission of HARQ-ACK corresponding to asingle cell or multiple cells and CSI corresponding to a single cell ormultiple cells is allowed. Also, the base station device sets the secondparameter at FALSE if simultaneous transmission of HARQ-ACKcorresponding to a single cell or multiple cells and CSI correspondingto a single cell or multiple cells is not allowed. That is, the secondparameter is used for instructing setting of simultaneous transmissionof HARQ-ACK corresponding to a single cell or multiple cells and CSIcorresponding to a single cell or multiple cells. Hereinafter, thesecond parameter is also written as “simultaneousAckNackAndCQI_v11.”

For example, if the second parameter is set at TRUE, the mobile stationdevice can simultaneously transmit HARQ-ACK corresponding to a singlecell or multiple cells and CSI corresponding to a single cell ormultiple cells. Also, if the second parameter is set at TRUE, the mobilestation device can simultaneously transmit HARQ-ACK corresponding to asingle cell or multiple cells and CSI corresponding to a single cell ormultiple cells by using the PUCCH format 3. Also, if the secondparameter is set at TRUE, the mobile station device can transmitHARQ-ACK corresponding to a single cell or multiple cells and CSIcorresponding to a single cell or multiple cells by using a n(3)PUCCHresource (described later).

Also, for example, if the second parameter is set at FALSE, the mobilestation device drops CSI corresponding to a single cell or multiplecells (does not transmit CSI corresponding to a single cell or multiplecells), and can transmit only HARQ-ACK corresponding to a single cell ormultiple cells. Also, if the second parameter is set at FALSE, themobile station device can transmit only HARQ-ACK corresponding to asingle cell or multiple cells by using the PUCCH format 3. Also, if thesecond parameter is set at FALSE, the mobile station device can transmitonly HARQ-ACK corresponding to a single cell or multiple cells by usingthe n(3)PUCCH resource (described later).

Herein, the number of bits of HARQ-ACK transmitted by using the PUCCHformat 3 is determined by the number of cells and a downlinktransmission mode in each cell. For example, the base station device canset the number of cells and the downlink transmission mode in each cellin the mobile station device by using the higher layer signal (forexample, the dedicated signal).

Also, the base station device can transmit (set) a third parameterrelating to simultaneous transmission of PUCCH and PUSCH to the mobilestation device. That is, the third parameter includes a parameterrelating to simultaneous transmission of PUCCH and PUSCH.

Herein, for example, the base station device transmits the thirdparameter to the mobile station device by using the higher layer signal(for example, the dedicated signal). That is, for example, the basestation device can set by using the higher layer signal, in the mobilestation device, the third parameter whether or not simultaneoustransmission of PUCCH and PUSCH is allowed according to the thirdparameter. That is, the third parameter is used for an instruction tothe mobile station device whether or not simultaneous transmission ofPUCCH and PUSCH is set.

For example, if simultaneous transmission of PUCCH and PUSCH is allowed,the base station device sets the third parameter at TRUE. Also, ifsimultaneous transmission of PUCCH and PUSCH is not allowed, the basestation device sets the third parameter at FALSE. That is, the thirdparameter is used for instructing setting of simultaneous transmissionof PUCCH and PUSCH. Hereinafter, the third parameter is also written as“simultaneousPUCCH-PUSCH.”

For example, default values of the first parameter, the secondparameter, and the third parameters are FALSE.

FIG. 5 is an illustration explaining this embodiment. FIG. 5 shows threeserving cells. Herein, FIG. 5 corresponds to FIG. 4. That is, FIG. 5shows a single primary cell (DLPCC, ULPCC) and two secondary cells(DLSCC-1, DLSCC-2, ULSCC-1).

In FIG. 5, the base station device schedules (assigns) (a single ormultiple) PDSCH in the same sub-frame by using downlink controlinformation transmitted on (a single or multiple) PDCCH allocated on theserving cell (downlink cell). Herein, the base station device may notschedule multiple PDSCH in the same sub-frame by using downlink controlinformation transmitted on a single PDCCH.

Also, the base station can schedule PDSCH allocated on the same servingcell (downlink cell) as the serving cell (downlink cell) allocated withPDCCH. FIG. 5 shows that the base station device schedules PDSCHallocated on DLPCC by using downlink control information transmitted onPDCCH allocated on DLPCC (PDCCH indicated by oblique lines) by solidlines as an example. Also, FIG. 5 shows that the base station deviceschedules PDSCH allocated on DLSCC-1 by using downlink controlinformation transmitted on PDCCH allocated on DLSCC-1 (PDCCH indicatedby grid lines) by solid lines. Also, FIG. 5 shows that the base stationdevice schedules PDSCH allocated on DLSCC-2 by using downlink controlinformation transmitted on PDCCH allocated on DLSCC-2 (PDCCH indicatedby mesh lines) by solid lines.

Also, in FIG. 5, the base station can schedule PDSCH allocated on thesame or different serving cell (downlink cell) as or from the servingcell (downlink cell) allocated with PDCCH. For example, the base stationdevice can schedule PDSCH allocated on the same or different servingcell as or from the serving cell allocated with PDCCH by transmitting aComponent carrier Indicator (CIF, for example, expressed by 3 bits) inaddition to the downlink control information transmitted on PDCCH.

FIG. 5 shows that the base station device schedules PDSCH allocated onDLPCC by using downlink control information transmitted on PDCCHallocated on DLPCC (indicated by oblique lines) by dotted lines as anexample. Also, FIG. 5 shows that the base station device schedules PDSCHallocated on DLSCC-1 by using downlink control information transmittedon PDCCH allocated on DLSCC-1 (indicated by grid lines) by dotted lines.Also, FIG. 5 shows that the base station device schedules PDSCHallocated on DLSCC-2 by using downlink control information transmittedon PDCCH allocated on DLSCC-1 (indicated by mesh lines) by dotted linesas an example.

Herein, PDSCH on the primary cell is always scheduled by using downlinkcontrol information transmitted on PDCCH on the primary cell. That is,PDSCH on the primary cell is not scheduled by using downlink controlinformation transmitted on PDCCH on the secondary cell.

In FIG. 5, the base station device transmits a downlink transport block(transport block for DL-SCH) by using PDSCH scheduled by downlinkcontrol information transmitted on PUCCH. For example, the base stationdevice can transmit multiple downlink transport blocks in the samesub-frame by using PDSCHs scheduled by downlink control informationtransmitted on each of PDCCHs allocated on DLPCC, DLSCC-1, and DLSCC-2.

Also, in FIG. 5, a region extending from PUCCH allocated on ULPCC (PUCCHresource region indicated by a dot pattern) is conceptual expression ofa PUCCH source region allocated on ULPCC. Herein, in FIG. 5, for easierdescription, the horizontal direction represents a physical resourceblock (which may be expressed as time-frequency resource, or simply,frequency resource, or band width), but an orthogonal resource is notdescribed.

In FIG. 5, the base station device can designate a first region that themobile station device can use PUCCH (for example, PUCCH resource regionA from RB6 to RB8). That is, the base station device can designate thefirst region that the mobile station device can use the PUCCH format 1/1a/1 b (PUCCH format 1, PUCCH format 1 a, or PUCCH format 1 b).

For example, the base station device can designate the first region tothe mobile station device by using the higher layer signal. That is, thebase station device can designate the first region to the mobile stationdevice by notifying the mobile station device about information relatingto the band width for the first region. Also, the base station devicecan designate the first region to the mobile station device by notifyingthe mobile station device about information relating to a starting pointfor the first region. Also, the base station device can designate thefirst region to the mobile station device by notifying the mobilestation device about information relating to an orthogonal resource forthe first region. Herein, for example, the information relating to theorthogonal resource includes a cyclic shift (the number of cyclicshifts) of a CAZAC sequence, and an index of an orthogonal sequence.

Also, the base station device can designate a second region that themobile station device can use PUCCH (for example, PUCCH resource regionB from RB1 to RB2). That is, the base station device can designate thesecond region that the mobile station device can use the PUCCH format2/2 a/2 b (PUCCH format 2, PUCCH format 2 a, or PUCCH format 2 b).

For example, the base station device can designate the second region tothe mobile station device by using the higher layer signal. That is, thebase station device can designate the second region to the mobilestation device by notifying the mobile station device about informationrelating to the band width for the second region. Also, the base stationdevice can designate the second region to the mobile station device bynotifying the mobile station device about information relating to astarting point for the second region. Also, the base station device candesignate the second region to the mobile station device by notifyingthe mobile station device about information relating to an orthogonalresource for the second region.

Also, the base station device can designate a third region that themobile station device can use PUCCH (for example, PUCCH resource regionC from RB3 to RB5). That is, the base station device can designate thethird region that the mobile station device can use the PUCCH format 3.

For example, the base station device can designate the third region tothe mobile station device by using the higher layer signal. That is, thebase station device can designate the third region to the mobile stationdevice by notifying the mobile station device about information relatingto the band width for the third region. Also, the base station devicecan designate the third region to the mobile station device by notifyingthe mobile station device about information relating to a starting pointfor the third region. Also, the base station device can designate thethird region to the mobile station device by notifying the mobilestation device about information relating to an orthogonal resource forthe third region.

Further, the base station device can schedule (assign, set, instruct) aPUCCH resource in the mobile station device to each PUCCH resourceregion (PUCCH resource region A, PUCCH resource region B, PUCCH resourceregion C). That is, the base station device can schedule a PUCCHresource that is used when the mobile station device transmits uplinkcontrol information (HARQ-ACK and/or CSI and/or scheduling request), ineach PUCCH resource region.

That is, the base station device can schedule a PUCCH resource (alsocalled n(1)PUCCH resource) that is used when the mobile station devicetransmits uplink control information by using the PUCCH format 1/1 a/1b. Also, the base station device can schedule a PUCCH resource (alsocalled n(2)PUCCH resource) that is used when the mobile station devicetransmits uplink control information by using the PUCCH format 2/2 a/2b. Also, the base station device can schedule a PUCCH resource (alsocalled n(3)PUCCH resource) that is used when the mobile station devicetransmits uplink control information by using the PUCCH format 3.

For example, the base station device can set the PUCCH resource in themobile station device by using the higher layer signal. For example, thebase station device can set the n(2)PUCCH resource in the mobile stationdevice by using the higher layer signal.

Also, for example, the base station device can instruct the PUCCHresource in association with PDCCH. For example, the base station devicecan instruct the n(1)PUCCH resource to the mobile station device byusing the number of the first CCE (Control Channel Element) that is usedfor transmission of PDCCH (that forms PDCCH).

Also, for example, the base station device can instruct the PUCCHresource by using the higher layer signal and downlink controlinformation transmitted on PDCCH. For example, the base station devicesets four PUCCH resources by using the higher layer signal, and furtherinstructs a single PUCCH resource from among the set four PUCCHresources. Hence, the base station device can instruct the n(3)PUCCHresource to the mobile station device.

That is, the base station device can schedule each PUCCH resource thatis used when the mobile station device transmits uplink controlinformation by using the PUCCH format 1/1 a/1 b, the PUCCH format 2/2a/2 b, or the PUCCH format 3. That is, the base station device canschedule different PUCCH resources as the n(1)PUCCH resource, then(2)PUCCH resource, and the n(3)PUCCH resource.

In FIG. 5, the mobile station device transmits an uplink transport block(transport block for UL-SCH) by using PUSCH scheduled by downlinkcontrol information transmitted on PUCCH. For example, the mobilestation device can transmit multiple uplink transport blocks in the samesub-frame by using PUSCHs allocated on ULPCC, ULSCC-1.

Also, in FIG. 5, the mobile station device transmits uplink controlinformation by using PUSCH and/or PUCCH. That is, for example, themobile station device transmits uplink control information by usingPUSCH scheduled by the base station device.

Also, the mobile station device transmits uplink control information byusing the PUCCH format (PUCCH format 1/1 a/1 b, PUCCH format 2/2 a/2 b,or PUCCH format 3). At this time, the mobile station device transmitsuplink control information by using the PUSCH resource (n(1)PUCCHresource, n(2)PUCCH resource, or n(3)PUCCH resource) scheduled by thebase station device.

FIG. 6 is still another illustration explaining this embodiment. FIG. 6shows a transmission method of HARQ-ACK and/or CSI by the mobile stationdevice, which has received the first parameter set at TRUE or FALSE andthe second parameter set at TRUE or FALSE. That is, FIG. 6 shows atransmission method of HARQ-ACK and/or CSI in a sub-frame, in whichPUSCH (PUSCH resource) is not scheduled by the base station device.

Hereinafter, described with explanation in FIG. 6 is a transmissionmethod of HARQ-ACK and/or CSI by the mobile station device in asub-frame in which HARQ-ACK (transmission of HARQ-ACK) and CSI(transmission of CSI) collide with each other (simultaneously occur).Herein, in the explanation in FIG. 6, the sub-frame in which HARQ-ACKand CSI collide with each other represents a sub-frame without PUSCH.

As shown in FIG. 6, in case of collision between HARQ-ACK and CSI in asub-frame without PUSCH, the mobile station device changes thetransmission method of HARQ-ACK and/or CSI, the change of thetransmission method depending on the case that which cell's HARQ-ACK istransmitted, the HARQ-ACK corresponding to transmission of PDSCH.

That is, in case of collision between HARQ-ACK and CSI, the mobilestation device changes the transmission method of HARQ-ACK and/or CSI,the change of the transmission method depending on the case that whichcell's HARQ-ACK is transmitted, the HARQ-ACK corresponding to a downlinktransport block transmitted on PDSCH.

For example, in case of collision between HARQ-ACK and CSI in asub-frame without PUSCH, the mobile station device changes the PUCCHformat that is used for transmission of HARQ-ACK and/or CSI, the changeof the transmission method depending on the case that which cell'sHARQ-ACK is transmitted, the HARQ-ACK corresponding to transmission ofPDSCH.

Also, in case of collision between HARQ-ACK and CSI in a sub-framewithout PUSCH, the mobile station device changes the PUCCH resource(uses different PUCCH resource) that is used for transmission ofHARQ-ACK and/or CSI, the change of the transmission method depending onthe case that which cell's HARQ-ACK is transmitted, the HARQ-ACKcorresponding to transmission of PDSCH.

That is, in case of collision between HARQ-ACK and CSI in a sub-framewithout PUSCH, the mobile station device changes the PUCCH format (usesdifferent PUCCH format) that is used for transmission of HARQ-ACK and/orCSI, the change of the transmission method depending on the case thatwhich cell's HARQ-ACK is transmitted, the HARQ-ACK corresponding to adownlink transport block transmitted on PDSCH.

That is, in case of collision between HARQ-ACK and CSI in a sub-framewithout PUSCH, the mobile station device changes the PUCCH resource(uses different PUCCH resource) that is used for transmission ofHARQ-ACK and/or CSI, the change of the transmission method depending onthe case that which cell's HARQ-ACK is transmitted, the HARQ-ACKcorresponding to a downlink transport block transmitted on PDSCH.

For example, if the mobile station device transmits HARQ-ACKcorresponding to transmission of a single PDSCH only on the primarycell, the mobile station device transmits HARQ-ACK and/or CSI accordingto the first parameter. That is, if the mobile station device transmitsHARQ-ACK corresponding to a downlink transport block transmitted on asingle PDSCH only on the primary cell, the mobile station devicetransmits HARQ-ACK and/or CSI according to the first parameter.

Also, if the mobile station device transmits HARQ-ACK corresponding totransmission of a single PDSCH on the secondary cell, the mobile stationdevice transmits HARQ-ACK and/or CSI according to the second parameter.That is, if the mobile station device transmits HARQ-ACK correspondingto a downlink transport block transmitted on a single PDSCH on thesecondary cell, the mobile station device transmits HARQ-ACK and/or CSIaccording to the second parameter.

Also, if the mobile station device transmits HARQ-ACK corresponding totransmission of multiple PDSCHs on the primary cell and the secondarycell, the mobile station device transmits HARQ-ACK and/or CSI accordingto the second parameter. That is, if the mobile station device transmitsHARQ-ACK corresponding to downlink transport blocks transmitted onmultiple PDSCHs on the primary cell and the secondary cell, the mobilestation device transmits HARQ-ACK and/or CSI according to the secondparameter.

Also, if the mobile station device transmits HARQ-ACK corresponding totransmission of multiple PDSCHs on multiple secondary cells, the mobilestation device transmits HARQ-ACK and/or CSI according to the secondparameter. That is, if the mobile station device transmits HARQ-ACKcorresponding to downlink transport blocks transmitted on multiplePDSCHs on multiple secondary cells, the mobile station device transmitsHARQ-ACK and/or CSI according to the second parameter.

That is, if the mobile station device transmits HARQ-ACK correspondingto transmission of PDSCH on at least a single secondary cell, the mobilestation device transmits HARQ-ACK and/or CSI according to the secondparameter. That is, if the mobile station device transmits HARQ-ACKcorresponding to a downlink transport block transmitted on PDSCH on atleast a single secondary cell, the mobile station device transmitsHARQ-ACK and/or CSI according to the second parameter.

As shown in FIG. 6, for example, the mobile station device, which hasreceived the first parameter set at FALSE and the second parameter setat FALSE, transmits HARQ-ACK and/or CSI according to the first parameterif the mobile station device transmits HARQ-ACK corresponding totransmission of a single PDSCH only on the primary cell.

That is, the mobile station device drops CSI and transmits onlyHARQ-ACK. That is, the mobile station device transmits only HARQ-ACK byusing the PUCCH format 1 a/1 b. Also, the mobile station devicetransmits only HARQ-ACK by using the n(1)PUCCH resource. Herein,HARQ-ACK that is transmitted by the mobile station device includesHARQ-ACK corresponding to a single cell (the primary cell). Also, CSIthat is dropped by the mobile station device includes CSI correspondingto a single cell (the primary cell or the secondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at FALSE,transmits HARQ-ACK and/or CSI according to the second parameter if themobile station device transmits HARQ-ACK corresponding to transmissionof a single PDSCH on the secondary cell (or transmission of PDSCH on atleast a single secondary cell).

That is, the mobile station device drops CSI and transmits onlyHARQ-ACK. That is, the mobile station device transmits only HARQ-ACK byusing the PUCCH format 3. Also, the mobile station device transmits onlyHARQ-ACK by using the n(3)PUCCH resource. Herein, HARQ-ACK that istransmitted by the mobile station device includes HARQ-ACK correspondingto a single cell or multiple cells. Also, CSI that is dropped by themobile station device includes CSI corresponding to a single cell ormultiple cells.

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at FALSE,transmits HARQ-ACK and/or CSI according to the first parameter if themobile station device transmits HARQ-ACK corresponding to transmissionof a single PDSCH only on the primary cell.

That is, the mobile station device simultaneously transmits HARQ-ACK andCSI. That is, in case of collision between HARQ-ACK and CSI in a samesub-frame without PUSCH, if the first parameter is set at TRUE and ifHARQ-ACK corresponds to transmission of a single PDSCH only on theprimary cell, CSI is multiplexed with HARQ-ACK on PUCCH.

That is, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 2/2 a/2 b. Also, the mobile station device transmitsHARQ-ACK and CSI by using the n(2)PUCCH resource. Herein, HARQ-ACK thatis transmitted by the mobile station device includes HARQ-ACKcorresponding to a single cell (the primary cell). Also, CSI that istransmitted by the mobile station device includes CSI corresponding to asingle cell (the primary cell or the secondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at FALSE,transmits HARQ-ACK and/or CSI according to the second parameter if themobile station device transmits HARQ-ACK corresponding to transmissionof a single PDSCH on the secondary cell (or transmission of PDSCH on atleast a single secondary cell).

That is, the mobile station device drops CSI and transmits onlyHARQ-ACK. That is, the mobile station device transmits only HARQ-ACK byusing the PUCCH format 3. Also, the mobile station device transmits onlyHARQ-ACK by using the n(3)PUCCH resource. Herein, HARQ-ACK that istransmitted by the mobile station device includes HARQ-ACK correspondingto a single cell or multiple cells. Also, CSI that is dropped by themobile station device includes CSI corresponding to a single cell ormultiple cells.

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at TRUE,transmits HARQ-ACK and/or CSI according to the first parameter if themobile station device transmits HARQ-ACK corresponding to transmissionof a single PDSCH only on the primary cell.

That is, the mobile station device drops CSI and transmits onlyHARQ-ACK. That is, the mobile station device transmits only HARQ-ACK byusing the PUCCH format 1 a/1 b. Also, the mobile station devicetransmits only HARQ-ACK by using the n(1)PUCCH resource. Herein,HARQ-ACK that is transmitted by the mobile station device includesHARQ-ACK corresponding to a single cell (the primary cell). Also, CSIthat is dropped by the mobile station device includes CSI correspondingto a single cell (the primary cell or the secondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at TRUE,transmits HARQ-ACK and/or CSI according to the second parameter if themobile station device transmits HARQ-ACK corresponding to transmissionof a single PDSCH on the secondary cell (or transmission of PDSCH on atleast a single secondary cell).

That is, the mobile station device simultaneously transmits HARQ-ACK andCSI. That is, in case of collision between HARQ-ACK and CSI in a samesub-frame without PUSCH, if the second parameter is set at TRUE and ifHARQ-ACK corresponds to transmission of a single PDSCH on the secondarycell (or transmission of PDSCH on at least a single secondary cell), CSIis multiplexed with HARQ-ACK on PUCCH.

That is, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 3. Also, the mobile station device transmits HARQ-ACKand CSI by using the n(3)PUCCH resource. Herein, HARQ-ACK that istransmitted by the mobile station device includes HARQ-ACK correspondingto a single cell or multiple cells. Also, CSI that is transmitted by themobile station device includes CSI corresponding to a single cell ormultiple cells.

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at TRUE,transmits HARQ-ACK and/or CSI according to the first parameter if themobile station device transmits HARQ-ACK corresponding to transmissionof a single PDSCH only on the primary cell.

That is, the mobile station device simultaneously transmits HARQ-ACK andCSI. That is, when HARQ-ACK and CSI conflict with each other in the samesub-frame without PUSCH, if the first parameter is set at TRUE and ifHARQ-ACK corresponds to transmission of a single PDSCH only on theprimary cell, CSI is multiplexed with HARQ-ACK on PUCCH.

That is, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 2/2 a/2 b. Also, the mobile station device transmitsHARQ-ACK and CSI by using the n(2)PUCCH resource. Herein, HARQ-ACK thatis transmitted by the mobile station device includes HARQ-ACKcorresponding to a single cell (the primary cell). Also, CSI that istransmitted by the mobile station device includes CSI corresponding to asingle cell (the primary cell or the secondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at TRUE,transmits HARQ-ACK and/or CSI according to the second parameter if themobile station device transmits HARQ-ACK corresponding to transmissionof a single PDSCH on the secondary cell (or transmission of PDSCH on atleast a single secondary cell).

That is, the mobile station device simultaneously transmits HARQ-ACK andCSI. That is, in case of collision between HARQ-ACK and CSI in a samesub-frame without PUSCH, if the second parameter is set at TRUE and ifHARQ-ACK corresponds to transmission of a single PDSCH on the secondarycell (or transmission of PDSCH on at least a single secondary cell), CSIis multiplexed with HARQ-ACK on PUCCH.

That is, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 3. Also, the mobile station device transmits HARQ-ACKand CSI by using the n(3)PUCCH resource. Herein, HARQ-ACK that istransmitted by the mobile station device includes HARQ-ACK correspondingto a single cell or multiple cells. Also, CSI that is transmitted by themobile station device includes CSI corresponding to a single cell ormultiple cells.

Further, in FIG. 6, in case of collision between HARQ-ACK and CSI in asub-frame without PUSCH, the mobile station device, which has receivedthe first parameter and the second parameter, may change thetransmission method of HARQ-ACK and/or CSI depending on the cell onwhich transmission of PDSCH is instructed by downlink controlinformation detected in PDSCH.

Further, in case of collision between HARQ-ACK and CSI in a sub-framewithout PUSCH, the mobile station device may change the transmissionmethod of HARQ-ACK and/or CSI depending on the cell on whichtransmission of a downlink transport block on PDSCH is instructed bydownlink control information detected in PDCCH.

For example, in case of collision between HARQ-ACK and CSI in asub-frame without PUSCH, the mobile station device changes the PUCCHformat (uses different PUCCH format) that is used for transmission ofHARQ-ACK and/or CSI depending on the cell on which transmission of PDSCHis instructed by downlink control information detected in PDCCH.

For example, in case of collision between HARQ-ACK and CSI in asub-frame without PUSCH, the mobile station device changes the PUCCHresource (uses different PUCCH resource) that is used for transmissionof HARQ-ACK and/or CSI depending on the cell on which transmission ofPDSCH is instructed by downlink control information detected in PDCCH.

That is, in case of collision between HARQ-ACK and CSI in a sub-framewithout PUSCH, the mobile station device changes the PUCCH format (usesdifferent PUCCH format) that is used for transmission of HARQ-ACK and/orCSI depending on the cell on which transmission of a downlink transportblock on PDSCH is instructed by downlink control information detected inPDCCH.

That is, in case of collision between HARQ-ACK and CSI in a sub-framewithout PDSCH, the mobile station device changes the PUCCH resource(uses different PUCCH resource) that is used for transmission ofHARQ-ACK and/or CSI depending on the cell on which transmission of adownlink transport block on PDSCH is instructed by downlink controlinformation detected in PDCCH.

For example, if the mobile station device detects, in a single PDCCH,downlink control information that instructs transmission of a singlePDSCH only on the primary cell, the mobile station device transmitsHARQ-ACK and/or CSI according to the first parameter. That is, if themobile station device detects, in a single PDCCH, downlink controlinformation that instructs transmission of a downlink transport block ona single PDSCH only on the primary cell, the mobile station devicetransmits HARQ-ACK and/or CSI according to the first parameter.

Also, if the mobile station device detects, in a single PDCCH, downlinkcontrol information that instructs transmission of a single PDSCH on thesecondary cell, the mobile station device transmits HARQ-ACK and/or CSIaccording to the second parameter. That is, if the mobile station devicedetects, in a single PDSCH, downlink control information that instructstransmission of a downlink transport block on a single PDSCH on thesecondary cell, the mobile station device transmits HARQ-ACK and/or CSIaccording to the second parameter.

Also, if the mobile station device detects, in multiple PDCCHs, downlinkcontrol information that instructs transmission of multiple PDSCHs onthe primary cell and the secondary cell, the mobile station devicetransmits HARQ-ACK and/or CSI according to the second parameter. Also,if the mobile station device detects, in multiple PDCCHs, downlinkcontrol information that instructs transmission of downlink transportblocks on multiple PDSCHs on the primary cell and the secondary cell,the mobile station device transmits HARQ-ACK and/or CSI according to thesecond parameter.

Also, if the mobile station device detects, in multiple PDCCHs, downlinkcontrol information that instructs transmission of multiple PDSCHs onmultiple secondary cells and multiple PDCCHs, the mobile station devicetransmits HARQ-ACK and/or CSI according to the second parameter. Thatis, if the mobile station device detects, in multiple PDCCHs, downlinkcontrol information that instructs transmission of downlink transportblocks on multiple PDSCH on multiple secondary cells, the mobile stationdevice transmits HARQ-ACK and/or CSI according to the second parameter.

That is, if the mobile station device detects, in PDCCH, downlinkcontrol information that instructs transmission of PDSCH on at least asingle secondary cell, the mobile station device transmits HARQ-ACKand/or CSI according to the second parameter. That is, if the mobilestation device detects, in PDCCH, downlink control information thatinstructs transmission of a downlink transport block on PDSCH on atleast a single secondary cell, the mobile station device transmitsHARQ-ACK and/or CSI according to the second parameter.

In FIG. 6, for example, the mobile station device, which has receivedthe first parameter set at FALSE and the second parameter set at FALSE,transmits HARQ-ACK and/or CSI according to the first parameter if themobile station device detects, in PDCCH, downlink control informationthat instructs transmission of a single PDSCH only on the primary cell.

That is, the mobile station device drops CSI and transmits onlyHARQ-ACK. That is, the mobile station device transmits only HARQ-ACK byusing the PUCCH format 1 a/1 b. Also, the mobile station devicetransmits only HARQ-ACK by using the n(1)PUCCH resource. Herein,HARQ-ACK that is transmitted by the mobile station device includesHARQ-ACK corresponding to a single cell (the primary cell). Also, CSIthat is dropped by the mobile station device includes CSI correspondingto a single cell (the primary cell or the secondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at FALSE,transmits HARQ-ACK and/or CSI according to the second parameter if themobile station device detects, in PDSCH, downlink control informationthat instructs transmission of a single PDSCH on the secondary cell (ortransmission of PDSCH on at least a single secondary cell).

That is, the mobile station device drops CSI and transmits onlyHARQ-ACK. That is, the mobile station device transmits only HARQ-ACK byusing the PUCCH format 3. Also, the mobile station device transmits onlyHARQ-ACK by using the n(3)PUCCH resource. Herein, HARQ-ACK that istransmitted by the mobile station device includes HARQ-ACK correspondingto a single cell or multiple cells. Also, CSI that is dropped by themobile station device includes CSI corresponding to a single cell ormultiple cells.

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at FALSE,transmits HARQ-ACK and/or CSI according to the first parameter if themobile station device detects, in PDCCH, downlink control informationthat instructs transmission of a single PDSCH only on the primary cell.

That is, the mobile station device simultaneously transmits HARQ-ACK andCSI. That is, in case of collision between HARQ-ACK and CSI in a samesub-frame without PUSCH, if the first parameter is set at TRUE and ifdownlink control information that instructs transmission of a singlePDSCH only on the primary cell is detected in PDCCH, CSI is multiplexedwith HARQ-ACK on PUCCH.

That is, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 2/2 a/2 b. Also, the mobile station device transmitsHARQ-ACK and CSI by using the n(2)PUCCH resource. Herein, HARQ-ACK thatis transmitted by the mobile station device includes HARQ-ACKcorresponding to a single cell (the primary cell). Also, CSI that istransmitted by the mobile station device includes CSI corresponding to asingle cell (the primary cell or the secondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at FALSE,transmits HARQ-ACK and/or CSI according to the second parameter if themobile station device detects, in PDSCH, downlink control informationthat instructs transmission of a single PDSCH on the secondary cell (ortransmission of PDSCH on at least a single secondary cell).

That is, the mobile station device drops CSI and transmits onlyHARQ-ACK. That is, the mobile station device transmits HARQ-ACK by usingthe PUCCH format 3. Also, the mobile station device transmits HARQ-ACKby using the n(3)PUCCH resource. Herein, HARQ-ACK that is transmitted bythe mobile station device includes HARQ-ACK corresponding to a singlecell or multiple cells. Also, CSI that is dropped by the mobile stationdevice includes CSI corresponding to a single cell or multiple cells.

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at TRUE,transmits HARQ-ACK and/or CSI according to the first parameter if themobile station device detects, in PDCCH, downlink control informationthat instructs transmission of a single PDSCH only on the primary cell.

That is, the mobile station device drops CSI and transmits onlyHARQ-ACK. That is, the mobile station device transmits only HARQ-ACK byusing the PUCCH format 1 a/1 b. Also, the mobile station devicetransmits only HARQ-ACK by using the n(1)PUCCH resource. Herein,HARQ-ACK that is transmitted by the mobile station device includesHARQ-ACK corresponding to a single cell (the primary cell). Also, CSIthat is dropped by the mobile station device includes CSI correspondingto a single cell (the primary cell or the secondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at TRUE,transmits HARQ-ACK and/or CSI according to the second parameter if themobile station device detects, in PDCCH, downlink control informationthat instructs transmission of a single PDSCH on the secondary cell (ortransmission of PDSCH on at least a single secondary cell).

That is, the mobile station device simultaneously transmits HARQ-ACK andCSI. That is, in case of collision between HARQ-ACK and CSI in a samesub-frame without PUSCH, if the second parameter is set at TRUE and ifdownlink control information that instructs transmission of a singlePDSCH on the secondary cell (or transmission of PDSCH on at least asingle secondary cell) is detected, CSI is multiplexed with HARQ-ACK onPUCCH.

That is, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 3. Also, the mobile station device transmits HARQ-ACKand CSI by using the n(3)PUCCH resource. Herein, HARQ-ACK that istransmitted by the mobile station device includes HARQ-ACK correspondingto a single cell or multiple cells. Also, CSI that is transmitted by themobile station device includes CSI corresponding to a single cell ormultiple cells.

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at TRUE,transmits HARQ-ACK and/or CSI according to the first parameter if themobile station device detects, in PDCCH, downlink control informationthat instructs transmission of a single PDSCH only on the primary cell.

That is, the mobile station device simultaneously transmits HARQ-ACK andCSI. That is, in case of collision between HARQ-ACK and CSI in a samesub-frame without PUSCH, if the first parameter is set at TRUE and ifdownlink control information that instructs transmission of a singlePDSCH only on the primary cell is detected in PDCCH, CSI is multiplexedwith HARQ-ACK on PUCCH.

That is, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 2/2 a/2 b. Also, the mobile station device transmitsHARQ-ACK and CSI by using the n(2)PUCCH resource. Herein, HARQ-ACK thatis transmitted by the mobile station device includes HARQ-ACKcorresponding to a single cell (the primary cell). Also, CSI that istransmitted by the mobile station device includes CSI corresponding to asingle cell (the primary cell or the secondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at TRUE,transmits HARQ-ACK and/or CSI according to the second parameter if themobile station device detects, in PDCCH, downlink control informationthat instructs transmission of a single PDSCH on the secondary cell (ortransmission of PDSCH on at least a single secondary cell).

That is, the mobile station device simultaneously transmits HARQ-ACK andCSI. That is, in case of collision between HARQ-ACK and CSI in a samesub-frame without PUSCH, if the second parameter is set at TRUE and ifdownlink control information that instructs transmission of a singlePDSCH on the secondary cell (or transmission of PDSCH on at least asingle secondary cell) is detected in PDCCH, CSI is multiplexed withHARQ-ACK on PUCCH.

That is, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 3. Also, the mobile station device transmits HARQ-ACKand CSI by using the n(3)PUCCH resource. Herein, HARQ-ACK that istransmitted by the mobile station device includes HARQ-ACK correspondingto a single cell or multiple cells. Also, CSI that is transmitted by themobile station device includes CSI corresponding to a single cell ormultiple cells.

FIG. 7 is still another illustration explaining this embodiment. FIG. 7shows a transmission method of HARQ-ACK and/or CSI by the mobile stationdevice, which has received the first parameter set at TRUE or FALSE andthe second parameter set at TRUE or FALSE. Herein, FIG. 7 shows atransmission method of HARQ-ACK and/or CSI when simultaneoustransmission of PUCCH and PUSCH is set (the third parameter is set atTRUE) and PUSCH (PUSCH resource) is scheduled. That is, FIG. 7 shows atransmission method of HARQ-ACK and/or CSI by the mobile station device,in which simultaneous transmission of PUCCH and PUSCH is set.

Hereinafter, described with explanation in FIG. 7 is a transmissionmethod of HARQ-ACK and/or CSI by the mobile station device in asub-frame in which HARQ-ACK (transmission of HARQ-ACK) and CSI(transmission of CSI) collide with each other (simultaneously occur).Herein, in the explanation in FIG. 7, the sub-frame in which HARQ-ACKand CSI collide with each other represents a sub-frame with PUSCH(sub-frame in which transmission on PUSCH is performed).

As shown in FIG. 7, for example, the mobile station device, which hasreceived the first parameter set at FALSE and the second parameter setat FALSE, transmits HARQ-ACK on PUCCH and CSI on PUSCH if the mobilestation device transmits HARQ-ACK corresponding to transmission of asingle PDSCH only on the primary cell is transmitted.

Similarly, the mobile station device, which has received the firstparameter (the first parameter set at FALSE or TRUE) and the secondparameter (the second parameter set at FALSE or TRUE), transmitsHARQ-ACK on PUCCH and CSI on PUSCH if the mobile station devicetransmits HARQ-ACK corresponding to transmission of a single PDSCH onlyon the primary cell.

That is, in case of collision between HARQ-ACK and CSI in a samesub-frame with PUSCH, the mobile station device, in which simultaneoustransmission of PUCCH and PUSCH is set, transmits HARQ-ACK on PUCCH andCSI on PUSCH if HARQ-ACK corresponds to transmission of a single PDSCHonly on the primary cell.

Herein, the mobile station device transmits HARQ-ACK by using the PUCCHformat 1 a/1 b. Also, the mobile station device transmits HARQ-ACK byusing the n(1)PUCCH resource. Herein, HARQ-ACK that is transmitted bythe mobile station device includes HARQ-ACK corresponding to a singlecell (the primary cell). Also, CSI that is transmitted by the mobilestation device includes CSI corresponding to a single cell (the primarycell or the secondary cell). Also, the mobile station device cantransmit CSI together with uplink data (transport block for UL-SCH) byusing the PUSCH resource.

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at FALSE,transmits HARQ-ACK on PUCCH and CSI on PUSCH if the mobile stationdevice transmits HARQ-ACK corresponding to transmission of a singlePDSCH on the secondary cell (or transmission of PDSCH on at least asingle secondary cell).

Similarly, the mobile station device, which has received the firstparameter set at TRUE and the second parameter set at FALSE, transmitsHARQ-ACK on PUCCH and CSI on PUSCH if the mobile station devicetransmits HARQ-ACK corresponding to transmission of a single PDSCH onthe secondary cell (or transmission of PDSCH on at least a singlesecondary cell).

That is, in case of collision between HARQ-ACK and CSI in a samesub-frame with PUSCH, if the second parameter is set at FALSE and ifHARQ-ACK corresponds to transmission of a single PDSCH on the secondarycell (or transmission of PDSCH on at least a single secondary cell), themobile station device, in which simultaneous transmission of PUCCH andPUSCH is set, transmits HARQ-ACK on PUCCH and CSI on PUSCH.

Herein, the mobile station device transmits HARQ-ACK by using the PUCCHformat 3. Also, the mobile station device transmits HARQ-ACK by usingthe n(3)PUCCH resource. Herein, HARQ-ACK that is transmitted by themobile station device includes HARQ-ACK corresponding to a single cellor multiple cells. Also, CSI that is transmitted by the mobile stationdevice includes CSI corresponding to a single cell or multiple cells.Also, the mobile station device can transmit CSI together with uplinkdata (transport block for UL-SCH) by using the PUSCH resource.

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at TRUE,transmits HARQ-ACK and CSI on PUCCH if the mobile station devicetransmits HARQ-ACK corresponding to transmission of a single PDSCH onthe secondary cell (or transmission of PDSCH on at least a singlesecondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at TRUE,transmits HARQ-ACK and CSI on PUCCH if the mobile station devicetransmits HARQ-ACK corresponding to transmission of a single PDSCH onthe secondary cell (or transmission of PDSCH on at least a singlesecondary cell).

That is, in case of collision between HARQ-ACK and CSI in a samesub-frame with PUSCH, if the second parameter is set at TRUE and ifHARQ-ACK corresponds to transmission of a single PDSCH on the secondarycell (or transmission of PDSCH on at least a single secondary cell), themobile station device, in which simultaneous transmission of PUCCH andPUSCH is set, transmits HARQ-ACK and CSI on PUCCH (CSI is multiplexedwith HARQ-ACK and PUCCH).

Herein, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 3. Also, the mobile station device transmits HARQ-ACKby using the n(3)PUCCH resource. Herein, HARQ-ACK that is transmitted bythe mobile station device includes HARQ-ACK corresponding to a singlecell or multiple cells. Also, CSI that is transmitted by the mobilestation device includes CSI corresponding to a single cell or multiplecells. Also, the mobile station device can transmit HARQ-ACK and CSI onPUCCH, and uplink data (transport block for UL-SCH) on PUSCH (by usingthe PUSCH resource).

That is, the mobile station device, in which simultaneous transmissionof PUCCH and PUSCH is set, determines whether the mobile station devicetransmits CSI on PUSCH or on PUCCH according to the second parameter ifthe mobile station device transmits HARQ-ACK corresponding totransmission of a single PDSCH on the secondary cell (or transmission ofPDSCH on at least a single secondary cell).

Also, in FIG. 7, for example, the mobile station device, which hasreceived the first parameter set at FALSE and the second parameter setat FALSE, may transmit HARQ-ACK on PUCCH and CSI on PUSCH if the mobilestation device detects, in a single PDCCH, downlink control informationthat instructs transmission of a single PDSCH only on the primary cell.

Similarly, the mobile station device, which has received the firstparameter (the first parameter set at FALSE or TRUE) and the secondparameter (the second parameter set at FALSE or TRUE), transmitsHARQ-ACK on PUCCH and CSI on PUSCH if the mobile station device detects,in a single PDCCH, downlink control information that instructstransmission of a single PDSCH only on the primary cell.

That is, in case of collision between HARQ-ACK and CSI in a samesub-frame with PUSCH, the mobile station device, in which simultaneoustransmission of PUCCH and PUSCH is set, transmits HARQ-ACK on PUCCH andCSI on PUSCH if the mobile station device detects, in a single PDCCH,downlink control information that instructs transmission of a singlePUSCH only on the primary cell.

Herein, the mobile station device transmits HARQ-ACK by using the PUCCHformat 1 a/1 b. Also, the mobile station device transmits HARQ-ACK byusing the n(1)PUCCH resource. Herein, HARQ-ACK that is transmitted bythe mobile station device includes HARQ-ACK corresponding to a singlecell (the primary cell). Also, CSI that is transmitted by the mobilestation device includes CSI corresponding to a single cell (the primarycell or the secondary cell). Also, the mobile station device cantransmit CSI together with uplink data (transport block for UL-SCH) byusing the PUSCH resource.

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at FALSE,transmits HARQ-ACK on PUCCH and CSI on PUSCH if the mobile stationdevice detects, in a single PDCCH, downlink control information thatinstructs transmission of a single PDSCH on the secondary cell (ortransmission of PDSCH on at least a single secondary cell).

Also, for example, the mobile station device, which has received thefirst parameter set at TRUE and the second parameter set at FALSE,transmits HARQ-ACK on PUCCH and CSI on PUSCH if the mobile stationdevice detects, in a single PDSCH, downlink control information thatinstructs transmission of a single PDSCH on the secondary cell (ortransmission of PDSCH on at least a single secondary cell).

That is, in case of collision between HARQ-ACK and CSI in a samesub-frame with PUSCH, if the second parameter is set at FALSE and ifdownlink control information that instructs transmission of a singlePDSCH on the secondary cell (or transmission of PDSCH on at least asingle secondary cell) is detected, the mobile station device, in whichsimultaneous transmission of PUCCH and PUSCH is set, transmits HARQ-ACKon PUCCH and CSI on PUSCH.

Herein, the mobile station device transmits HARQ-ACK by using the PUCCHformat 3. Also, the mobile station device transmits HARQ-ACK by usingthe n(3)PUCCH resource. Herein, HARQ-ACK that is transmitted by themobile station device includes HARQ-ACK corresponding to a single cellor multiple cells. Also, CSI that is transmitted by the mobile stationdevice includes CSI corresponding to a single cell or multiple cells.Also, the mobile station device can transmit CSI together with uplinkdata (transport block for UL-SCH) by using the PUSCH resource.

Also, for example, the mobile station device, which has received thefirst parameter set at FALSE and the second parameter set at TRUE,transmits HARQ-ACK and CSI on PUCCH if the mobile station devicedetects, in a single PDCCH, downlink control information that instructstransmission of a single PDSCH on the secondary cell (or transmission ofPDSCH on at least a single secondary cell).

Similarly, for example, the mobile station device, which has receivedthe first parameter set at TRUE and the second parameter set at TRUE,transmits HARQ-ACK and CSI on PUCCH if the mobile station devicedetects, in a single PDCCH, downlink control information that instructstransmission of a single PDSCH on the secondary cell (or transmission ofPDSCH on at least a single secondary cell).

That is, in case of collision between HARQ-ACK and CSI in a samesub-frame with PUSCH, if the second parameter is set at TRUE and ifdownlink control information that instructs transmission of a singlePDSCH on the secondary cell (or transmission of PDSCH on at least asingle secondary cell) is detected in a single PDCCH, the mobile stationdevice, in which simultaneous transmission of PUCCH and PUSCH is set,transmits HARQ-ACK and CSI on PUCCH (CSI is multiplexed with HARQ-ACK onPUCCH).

Herein, the mobile station device transmits HARQ-ACK and CSI by usingthe PUCCH format 3. Also, the mobile station device transmits HARQ-ACKby using the n(3)PUCCH resource. Herein, HARQ-ACK that is transmitted bythe mobile station device includes HARQ-ACK corresponding to a singlecell or multiple cells. Also, CSI that is transmitted by the mobilestation device includes CSI corresponding to a single cell or multiplecells. Also, the mobile station device can transmit HARQ-ACK and CSI onPUCCH, and uplink data (transport block for UL-SCH) by PUSCH (by usingthe PUSCH resource).

That is, the mobile station device, in which simultaneous transmissionof PUCCH and PUSCH is set, determines whether the mobile station devicetransmits CSI on PUSCH or on PUCCH according to the second parameter ifthe mobile station device detects, in a single PDCCH, downlink controlinformation that instructs transmission of a single PDSCH on thesecondary cell (or transmission of PDSCH on at least a single secondarycell).

Since the mobile station device transmits HARQ-ACK and/or CSI asdescribed above, the mobile station device can transmit HARQ-ACK and/orCSI by using a proper PUCCH format depending on the situation, and hencecan efficiently transmit HARQ-ACK and/or CSI.

For example, in a situation in which the number of cells used forcommunication in the base station device differs from the number ofcells used for communication in the mobile station device (when the basestation device changes the number of cells used for communication byusing the higher layer signal), the mobile station device can transmitHARQ-ACK by using the PUCCH format 1 a/1 b. That is, even if mismatch ofthe number of cells used for communication occurs between the basestation device and the mobile station device, communication can becontinued only on a single cell (the primary cell).

Also, for example, in a situation in which the number of cells used forcommunication in the base station device differs from the number ofcells used for communication in the mobile station device (when the basestation device changes the number of cells used for communication byusing the higher layer signal), the mobile station device cansimultaneously transmit HARQ-ACK and CSI by using the PUCCH format 2/2a/2 b. That is, even if mismatch of the number of cells used forcommunication occurs between the base station device and the mobilestation device, communication can be continued only on a single cell(the primary cell). Also, the base station device can perform efficientscheduling based on CSI.

Herein, basically, the PUCCH format 1 a/1 b and the PUCCH format 2/2 a/2b each can transmit a smaller number of bits than that of the PUCCHformat 3; however, the PUCCH format 1 a/1 b and the PUCCH format 2/2 a/2b each can perform code multiplexing on a single physical resource blockby a larger number than that of the PUCCH format 3. That is, in asituation in which the mobile station device transmits HARQ-ACKcorresponding to a single cell (when HARQ-ACK corresponding totransmission of a single PDSCH on the primary cell is transmitted), bytransmitting HARQ-ACK by using the PUCCH format 1 a/1 b or the PUCCHformat 2/2 a/2 b, HARQ-ACK and CSI can be efficiently transmitted.

Also, if the mobile station device transmits HARQ-ACK corresponding to asingle cell (HARQ-ACK with a small amount of information), the PUCCHformat 1 a/1 b or the PUCCH format 2/2 a/2 b is used. If the mobilestation device transmits HARQ-ACK corresponding to a single cell ormultiple cells (HARQ-ACK with an amount thereof possibly becomes large),the PUCCH format 3 is used. Accordingly, HARQ-ACK and/or CSI can beefficiently transmitted by using a proper format depending on thesituation.

Also, the error rate of ACK/NACK is desired to be further lower thanthat of CSI. That is, ACK/NACK that is transmitted with the PUCCH format1 a/1 b has a lower error rate than that of ACK/NACK that is transmittedwith the PUCCH format 2/2 a/2 b. That is, if only ACK/NACK istransmitted with the PUCCH format 3, the error rate of ACK/NACK is lowerthan the error rate of a case in which ACK/NACK and CSI are transmittedwith the PUCCH format 3.

Also, when the mobile station device transmits HARQ-ACK corresponding toa single cell, since the mobile station device uses the PUCCH format 1a/1 b or the PUCCH format 2/2 a/2 b according to the first parameter,the mobile station device can efficiently transmit HARQ-ACK and/or CSIby using a proper format.

Also, when the mobile station device transmits HARQ-ACK corresponding toa single cell or multiple cells, since the mobile station device usesthe PUCCH format 3 according to the second parameter, the mobile stationdevice can efficiently transmit only ACK/NACK, or ACK/NACK and CSI.

Also, since the base station device sets the second parameter becausethe mobile station device, in which simultaneous transmission of PUCCHand PUSCH is set, transmits HARQ-ACK and CSI as described above, thebase station device can switch transmission between transmission onPUSCH and transmission on PUCCH. That is, information that instructswhether CSI is transmitted on PUSCH or PUCCH is not required, and henceHARQ-ACK and CSI can be efficiently transmitted.

Herein, basically, the information amount by which information can betransmitted on PUCCH is limited. Also, the information amount by whichinformation can be transmitted on PUSCH is not limited. That is, PUCCHtransmits information by only a small information amount whereas PUSCHtransmits information by a large amount. Meanwhile, PUCCH is designed tobe suitable for transmission of uplink control information (HARQ-ACK,CSI, scheduling request). For example, PUCCH is available fortransmission with high electric power. Also, PUSCH is designed to besuitable for transmission of an uplink transport block.

That is, the base station device can switch transmission betweentransmission of CSI on PUSCH and transmission of CSI on PUCCH by usingthe second parameter depending on the situation. For example, if thebase station device causes HARQ-ACK with a large information amount tobe transmitted on PUCCH, the base station device can cause CSI to betransmitted on PUSCH. Also, if the base station device causes HARQ-ACKwith a small information amount to be transmitted on PUCCH, the basestation device can cause CSI to be transmitted on PUCCH.

Also, for example, if the base station device causes CSI with a largeinformation amount to be transmitted, the base station device can causeCSI to be transmitted on PUSCH. Also, if the base station causes CSIwith a small information amount to be transmitted, the base stationdevice can cause CSI to be transmitted on PUCCH.

Also, for example, when it is desirable that the base station devicecorrectly receives ACK/NACK, the base station device makes setting byusing the third parameter so that the mobile station device transmitsonly ACK/NACK on PUCCH. Also, for example, when it is desirable that thebase station device correctly receives CSI, the base station devicemakes setting by using the third parameter so that the mobile stationdevice transmits ACK/NACK and CSI on PUCCH.

As described above, since the base station device changes thetransmission method of HARQ-ACK and/or CSI depending on the situation,HARQ-ACK and/or CSI can be efficiently transmitted.

The above-described embodiment is also applied to an integrated circuitthat is mounted on the base station device and/or the mobile stationdevice. Also, in the above-described embodiment, the base station deviceor the mobile station device may be controlled by recording a program,which provides respective functions in the base station device orrespective functions in the mobile station device, on acomputer-readable recording medium, reading the program recorded on therecording medium by a computer system, and executing the program by thecomputer system. The “computer system” described herein includes OS andhardware such as a peripheral device.

Also, the “computer-readable recording medium” is a portable medium,such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM; ora storage device, such as a hard disk embedded in the computer system.Further, the “computer-readable recording medium” includes a mediumdynamically holding the program for a short period of time, such as acommunication line when the program is transmitted through a networklike the Internet or a telephone line; and a medium holding the programfor a predetermined period of time, such as a volatile memory in thecomputer system, which may be a server or a client in this case. Also,the aforementioned program may provide part of the above-describedfunctions, or may realize the above-described functions in combinationwith a program that is previously recorded in the computer system.

As described above, the present invention may employ aspects asdescribed below. In particular, there is provided a mobile communicationsystem according to the present invention, the mobile communicationsystem which allows a base station device and a mobile station device tocommunicate with each other, in which the base station device transmitsa first parameter relating to simultaneous transmission of HARQ-ACK andchannel state information and a second parameter relating tosimultaneous transmission of the HARQ-ACK and the channel stateinformation to the mobile station device; if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of a singlephysical downlink shared channel only on a primary cell, the mobilestation device transmits the HARQ-ACK and/or the channel stateinformation to the base station device according to the first parameter;and if the mobile station device transmits the HARQ-ACK corresponding totransmission of the single physical downlink shared channel on asecondary cell, the mobile station device transmits the HARQ-ACK and/orthe channel state information to the base station device according tothe second parameter.

Alternatively, there is provided a mobile communication system whichallows a base station device and a mobile station device to communicatewith each other, in which the base station device transmits a firstparameter relating to simultaneous transmission of HARQ-ACK and channelstate information and a second parameter relating to simultaneoustransmission of the HARQ-ACK and the channel state information to themobile station device; if the mobile station device transmits theHARQ-ACK corresponding to transmission of a single physical downlinkshared channel only on a primary cell, the mobile station devicetransmits the HARQ-ACK and/or the channel state information to the basestation device according to the first parameter; and if the mobilestation device transmits the HARQ-ACK corresponding to transmission ofthe physical downlink shared channel on at least a single secondarycell, the mobile station device transmits the HARQ-ACK and/or thechannel state information to the base station device according to thesecond parameter.

Alternatively, there is provided a mobile communication system whichallows a base station device and a mobile station device to communicatewith each other, in which the base station device transmits a firstparameter relating to simultaneous transmission of HARQ-ACK and channelstate information and a second parameter relating to simultaneoustransmission of the HARQ-ACK and the channel state information to themobile station device; if the mobile station device detects, in a singlephysical downlink control channel, downlink control information thatinstructs transmission of a single physical downlink shared channel onlyon a primary cell, the mobile station device transmits the HARQ-ACKand/or the channel state information to the base station deviceaccording to the first parameter; and if the mobile station devicedetects, in a single physical downlink control channel, downlink controlinformation that instructs transmission of a single physical downlinkshared channel on a secondary cell, the mobile station device transmitsthe HARQ-ACK and/or the channel state information to the base stationdevice according to the second parameter.

Alternatively, there is provided a mobile communication system whichallows a base station device and a mobile station device to communicatewith each other, in which the base station device transmits a firstparameter relating to simultaneous transmission of HARQ-ACK and channelstate information and a second parameter relating to simultaneoustransmission of the HARQ-ACK and the channel state information to themobile station device; if the mobile station device detects, in a singlephysical downlink control channel, downlink control information thatinstructs transmission of a single physical downlink shared channel onlyon a primary cell, the mobile station device transmits the HARQ-ACKand/or the channel state information to the base station deviceaccording to the first parameter; and if the mobile station devicedetects, in a physical downlink control channel, downlink controlinformation that instructs transmission of a physical downlink sharedchannel on at least a single secondary cell, the mobile station devicetransmits the HARQ-ACK and/or the channel state information to the basestation device according to the second parameter.

Also, the HARQ-ACK includes information indicative of ACK/NACK for adownlink transport block.

Also, the HARQ-ACK includes information indicative of DTX.

Alternatively, there is provided a base station device that communicateswith a mobile station device, in which the base station device transmitsa first parameter relating to simultaneous transmission of HARQ-ACK andchannel state information and a second parameter relating tosimultaneous transmission of the HARQ-ACK and the channel stateinformation to the mobile station device; if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of a singlephysical downlink shared channel only on a primary cell, the basestation device receives the HARQ-ACK and/or the channel stateinformation from the mobile station device according to the firstparameter; and if the mobile station device transmits the HARQ-ACKcorresponding to transmission of the single physical downlink sharedchannel on a secondary cell, the base station device receives theHARQ-ACK and/or the channel state information from the mobile stationdevice according to the second parameter.

Alternatively, there is provided a base station device that communicateswith a mobile station device, in which the base station device transmitsa first parameter relating to simultaneous transmission of HARQ-ACK andchannel state information and a second parameter relating tosimultaneous transmission of the HARQ-ACK and the channel stateinformation to the mobile station device; if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of a singlephysical downlink shared channel only on a primary cell, the basestation device receives the HARQ-ACK and/or the channel stateinformation from the mobile station device according to the firstparameter; and if the mobile station device transmits the HARQ-ACKcorresponding to transmission of the physical downlink shared channel onat least a single secondary cell, the base station device receives theHARQ-ACK and/or the channel state information from the mobile stationdevice according to the second parameter.

Alternatively, there is provided a base station device that communicateswith a mobile station device, in which the base station device transmitsa first parameter relating to simultaneous transmission of HARQ-ACK andchannel state information and a second parameter relating tosimultaneous transmission of the HARQ-ACK and the channel stateinformation to the mobile station device; if the mobile station devicedetects, in a single physical downlink control channel, downlink controlinformation that instructs transmission of a single physical downlinkshared channel only on a primary cell, the base station device receivesthe HARQ-ACK and/or the channel state information from the mobilestation device according to the first parameter; and if the mobilestation device detects, in a single physical downlink control channel,downlink control information that instructs transmission of a singlephysical downlink shared channel on a secondary cell, the base stationdevice receives the HARQ-ACK and/or the channel state information fromthe mobile station device according to the second parameter.

Alternatively, there is provided a base station device that communicateswith a mobile station device, in which the base station device transmitsa first parameter relating to simultaneous transmission of HARQ-ACK andchannel state information and a second parameter relating tosimultaneous transmission of the HARQ-ACK and the channel stateinformation to the mobile station device; if the mobile station devicedetects, in a single physical downlink control channel, downlink controlinformation that instructs transmission of a single physical downlinkshared channel only on a primary cell, the base station device receivesthe HARQ-ACK and/or the channel state information from the mobilestation device according to the first parameter; and if the mobilestation device detects, in a physical downlink control channel, downlinkcontrol information that instructs transmission of a physical downlinkshared channel on at least a single secondary cell, the base stationdevice receives the HARQ-ACK and/or the channel state information fromthe mobile station device according to the second parameter.

Also, the HARQ-ACK includes information indicative of ACK/NACK for adownlink transport block.

Also, the HARQ-ACK includes information indicative of DTX.

Alternatively, there is provided a mobile station device thatcommunicates with a base station device, in which the mobile stationdevice receives a first parameter relating to simultaneous transmissionof HARQ-ACK and channel state information and a second parameterrelating to simultaneous transmission of the HARQ-ACK and the channelstate information from the base station device; if the mobile stationdevice transmits the HARQ-ACK corresponding to transmission of a singlephysical downlink shared channel only on a primary cell, the mobilestation device transmits the HARQ-ACK and/or the channel stateinformation to the base station device according to the first parameter;and if the mobile station device transmits the HARQ-ACK corresponding totransmission of the single physical downlink shared channel on asecondary cell, the mobile station device transmits the HARQ-ACK and/orthe channel state information to the base station device according tothe second parameter.

Alternatively, there is provided a mobile station device thatcommunicates with a base station device, in which the mobile stationdevice receives a first parameter relating to simultaneous transmissionof HARQ-ACK and channel state information and a second parameterrelating to simultaneous transmission of the HARQ-ACK and the channelstate information from the base station device; if the mobile stationdevice transmits the HARQ-ACK corresponding to transmission of a singlephysical downlink shared channel only on a primary cell, the mobilestation device transmits the HARQ-ACK and/or the channel stateinformation to the base station device according to the first parameter;and if the mobile station device transmits the HARQ-ACK corresponding totransmission of the physical downlink shared channel on at least asingle secondary cell, the mobile station device transmits the HARQ-ACKand/or the channel state information to the base station deviceaccording to the second parameter.

Alternatively, there is provided a mobile station device thatcommunicates with a base station device, in which the mobile stationdevice receives a first parameter relating to simultaneous transmissionof HARQ-ACK and channel state information and a second parameterrelating to simultaneous transmission of the HARQ-ACK and the channelstate information from the base station device; if the mobile stationdevice detects, in a single physical downlink control channel, downlinkcontrol information that instructs transmission of a single physicaldownlink shared channel only on a primary cell, the mobile stationdevice transmits the HARQ-ACK and/or the channel state information tothe base station device according to the first parameter; and if themobile station device detects, in a single physical downlink controlchannel, downlink control information that instructs transmission of asingle physical downlink shared channel on a secondary cell, the mobilestation device transmits the HARQ-ACK and/or the channel stateinformation to the base station device according to the secondparameter.

Alternatively, there is provided a mobile station device thatcommunicates with a base station device, in which the mobile stationdevice receives a first parameter relating to simultaneous transmissionof HARQ-ACK and channel state information and a second parameterrelating to simultaneous transmission of the HARQ-ACK and the channelstate information from the base station device; if the mobile stationdevice detects, in a single physical downlink control channel, downlinkcontrol information that instructs transmission of a single physicaldownlink shared channel only on a primary cell, the mobile stationdevice transmits the HARQ-ACK and/or the channel state information tothe base station device according to the first parameter; and if themobile station device detects, in a physical downlink control channel,downlink control information that instructs transmission of a physicaldownlink shared channel on at least a single secondary cell, the mobilestation device transmits the HARQ-ACK and/or the channel stateinformation to the base station device according to the secondparameter.

Also, the HARQ-ACK includes information indicative of ACK/NACK for adownlink transport block.

Also, the HARQ-ACK includes information indicative of DTX.

Alternatively, there is provided a communication method of a basestation device that communicates with a mobile station device, includingtransmitting a first parameter relating to simultaneous transmission ofHARQ-ACK and channel state information and a second parameter relatingto simultaneous transmission of the HARQ-ACK and the channel stateinformation to the mobile station device; if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of a singlephysical downlink shared channel only on a primary cell, receiving theHARQ-ACK and/or the channel state information from the mobile stationdevice according to the first parameter; and if the mobile stationdevice transmits the HARQ-ACK corresponding to transmission of thesingle physical downlink shared channel on a secondary cell, receivingthe HARQ-ACK and/or the channel state information from the mobilestation device according to the second parameter.

Alternatively, there is provided a communication method of a basestation device that communicates with a mobile station device, includingtransmitting a first parameter relating to simultaneous transmission ofHARQ-ACK and channel state information and a second parameter relatingto simultaneous transmission of the HARQ-ACK and the channel stateinformation to the mobile station device; if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of a singlephysical downlink shared channel only on a primary cell, receiving theHARQ-ACK and/or the channel state information from the mobile stationdevice according to the first parameter; and if the mobile stationdevice transmits the HARQ-ACK corresponding to transmission of thephysical downlink shared channel on at least a single secondary cell,receiving the HARQ-ACK and/or the channel state information from themobile station device according to the second parameter.

Alternatively, there is provided a communication method of a basestation device that communicates with a mobile station device, includingtransmitting a first parameter relating to simultaneous transmission ofHARQ-ACK and channel state information and a second parameter relatingto simultaneous transmission of the HARQ-ACK and the channel stateinformation to the mobile station device; if the mobile station devicedetects, in a single physical downlink control channel, downlink controlinformation that instructs transmission of a single physical downlinkshared channel only on a primary cell, receiving the HARQ-ACK and/or thechannel state information from the mobile station device according tothe first parameter; and if the mobile station device detects, in asingle physical downlink control channel, downlink control informationthat instructs transmission of a single physical downlink shared channelon a secondary cell, receiving the HARQ-ACK and/or the channel stateinformation from the mobile station device according to the secondparameter.

Alternatively, there is provided a communication method of a basestation device that communicates with a mobile station device, includingtransmitting a first parameter relating to simultaneous transmission ofHARQ-ACK and channel state information and a second parameter relatingto simultaneous transmission of the HARQ-ACK and the channel stateinformation to the mobile station device; if the mobile station devicedetects, in a single physical downlink control channel, downlink controlinformation that instructs transmission of a single physical downlinkshared channel only on a primary cell, receiving the HARQ-ACK and/or thechannel state information from the mobile station device according tothe first parameter; and if the mobile station device detects, in aphysical downlink control channel, downlink control information thatinstructs transmission of a physical downlink shared channel on at leasta single secondary cell, receiving the HARQ-ACK and/or the channel stateinformation from the mobile station device according to the secondparameter.

Alternatively, there is provided a communication method of a mobilestation device that communicates with a base station device, includingreceiving a first parameter relating to simultaneous transmission ofHARQ-ACK and channel state information and a second parameter relatingto simultaneous transmission of the HARQ-ACK and the channel stateinformation from the base station device; if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of a singlephysical downlink shared channel only on a primary cell, transmittingthe HARQ-ACK and/or the channel state information to the base stationdevice according to the first parameter; and if the mobile stationdevice transmits the HARQ-ACK corresponding to transmission of thesingle physical downlink shared channel on a secondary cell,transmitting the HARQ-ACK and/or the channel state information to thebase station device according to the second parameter.

Alternatively, there is provided a communication method of a mobilestation device that communicates with a base station device, includingreceiving a first parameter relating to simultaneous transmission ofHARQ-ACK and channel state information and a second parameter relatingto simultaneous transmission of the HARQ-ACK and the channel stateinformation from the base station device; if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of a singlephysical downlink shared channel only on a primary cell, transmittingthe HARQ-ACK and/or the channel state information to the base stationdevice according to the first parameter; and if the mobile stationdevice transmits the HARQ-ACK corresponding to transmission of thephysical downlink shared channel on at least a single secondary cell,transmitting the HARQ-ACK and/or the channel state information to thebase station device according to the second parameter.

Alternatively, there is provided a communication method of a mobilestation device that communicates with a base station device, includingreceiving a first parameter relating to simultaneous transmission ofHARQ-ACK and channel state information and a second parameter relatingto simultaneous transmission of the HARQ-ACK and the channel stateinformation from the base station device; if the mobile station devicedetects, in a single physical downlink control channel, downlink controlinformation that instructs transmission of a single physical downlinkshared channel only on a primary cell, transmitting the HARQ-ACK and/orthe channel state information to the base station device according tothe first parameter; and if the mobile station device detects, in asingle physical downlink control channel, downlink control informationthat instructs transmission of a single physical downlink shared channelon a secondary cell, transmitting the HARQ-ACK and/or the channel stateinformation to the base station device according to the secondparameter.

Alternatively, there is provided a communication method of a mobilestation device that communicates with a base station device, includingreceiving a first parameter relating to simultaneous transmission ofHARQ-ACK and channel state information and a second parameter relatingto simultaneous transmission of the HARQ-ACK and the channel stateinformation from the base station device; if the mobile station devicedetects, in a single physical downlink control channel, downlink controlinformation that instructs transmission of a single physical downlinkshared channel only on a primary cell, transmitting the HARQ-ACK and/orthe channel state information to the base station device according tothe first parameter; and if the mobile station device detects, in aphysical downlink control channel, downlink control information thatinstructs transmission of a physical downlink shared channel on at leasta single secondary cell, transmitting the HARQ-ACK and/or the channelstate information to the base station device according to the secondparameter.

Alternatively, there is provided an integrated circuit that is mountedon a base station device, which communicates with a mobile stationdevice, and that causes the base station device to execute processing,the processing including processing of transmitting a first parameterrelating to simultaneous transmission of HARQ-ACK and channel stateinformation and a second parameter relating to simultaneous transmissionof the HARQ-ACK and the channel state information to the mobile stationdevice; if the mobile station device transmits the HARQ-ACKcorresponding to transmission of a single physical downlink sharedchannel only on a primary cell, processing of receiving the HARQ-ACKand/or the channel state information from the mobile station deviceaccording to the first parameter; and if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of the singlephysical downlink shared channel on a secondary cell, processing ofreceiving the HARQ-ACK and/or the channel state information from themobile station device according to the second parameter.

Alternatively, there is provided an integrated circuit that is mountedon a base station device, which communicates with a mobile stationdevice, and that causes the base station device to execute processing,the processing including processing of transmitting a first parameterrelating to simultaneous transmission of HARQ-ACK and channel stateinformation and a second parameter relating to simultaneous transmissionof the HARQ-ACK and the channel state information to the mobile stationdevice; if the mobile station device transmits the HARQ-ACKcorresponding to transmission of a single physical downlink sharedchannel only on a primary cell, processing of receiving the HARQ-ACKand/or the channel state information from the mobile station deviceaccording to the first parameter; and if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of the physicaldownlink shared channel on at least a single secondary cell, processingof receiving the HARQ-ACK and/or the channel state information from themobile station device according to the second parameter.

Alternatively, there is provided an integrated circuit that is mountedon a base station device, which communicates with a mobile stationdevice, and that causes the base station device to execute processing,the processing including processing of transmitting a first parameterrelating to simultaneous transmission of HARQ-ACK and channel stateinformation and a second parameter relating to simultaneous transmissionof the HARQ-ACK and the channel state information to the mobile stationdevice; if the mobile station device detects, in a single physicaldownlink control channel, downlink control information that instructstransmission of a single physical downlink shared channel only on aprimary cell, processing of receiving the HARQ-ACK and/or the channelstate information from the mobile station device according to the firstparameter; and if the mobile station device detects, in a singlephysical downlink control channel, downlink control information thatinstructs transmission of a single physical downlink shared channel on asecondary cell, processing of receiving the HARQ-ACK and/or the channelstate information from the mobile station device according to the secondparameter.

Alternatively, there is provided an integrated circuit that is mountedon a base station device, which communicates with a mobile stationdevice, and that causes the base station device to execute processing,the processing including processing of transmitting a first parameterrelating to simultaneous transmission of HARQ-ACK and channel stateinformation and a second parameter relating to simultaneous transmissionof the HARQ-ACK and the channel state information to the mobile stationdevice; if the mobile station device detects, in a single physicaldownlink control channel, downlink control information that instructstransmission of a single physical downlink shared channel only on aprimary cell, processing of receiving the HARQ-ACK and/or the channelstate information from the mobile station device according to the firstparameter; and if the mobile station device detects, in a physicaldownlink control channel, downlink control information that instructstransmission of a physical downlink shared channel on at least a singlesecondary cell, processing of receiving the HARQ-ACK and/or the channelstate information from the mobile station device according to the secondparameter.

Alternatively, there is provided an integrated circuit that is mountedon a mobile station device, which communicates with a base stationdevice, and that causes the mobile station device to execute processing,the processing including processing of receiving a first parameterrelating to simultaneous transmission of HARQ-ACK and channel stateinformation and a second parameter relating to simultaneous transmissionof the HARQ-ACK and the channel state information from the base stationdevice; if the mobile station device transmits the HARQ-ACKcorresponding to transmission of a single physical downlink sharedchannel only on a primary cell, processing of transmitting the HARQ-ACKand/or the channel state information to the base station deviceaccording to the first parameter; and if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of the singlephysical downlink shared channel on a secondary cell, processing oftransmitting the HARQ-ACK and/or the channel state information to thebase station device according to the second parameter.

Alternatively, there is provided an integrated circuit that is mountedon a mobile station device, which communicates with a base stationdevice, and that causes the mobile station device to execute processing,the processing including processing of receiving a first parameterrelating to simultaneous transmission of HARQ-ACK and channel stateinformation and a second parameter relating to simultaneous transmissionof the HARQ-ACK and the channel state information from the base stationdevice; if the mobile station device transmits the HARQ-ACKcorresponding to transmission of a single physical downlink sharedchannel only on a primary cell, processing of transmitting the HARQ-ACKand/or the channel state information to the base station deviceaccording to the first parameter; and if the mobile station devicetransmits the HARQ-ACK corresponding to transmission of the physicaldownlink shared channel on at least a single secondary cell, processingof transmitting the HARQ-ACK and/or the channel state information to thebase station device according to the second parameter.

Alternatively, there is provided an integrated circuit that is mountedon a mobile station device, which communicates with a base stationdevice, and that causes the mobile station device to execute processing,the processing including processing of receiving a first parameterrelating to simultaneous transmission of HARQ-ACK and channel stateinformation and a second parameter relating to simultaneous transmissionof the HARQ-ACK and the channel state information from the base stationdevice; if the mobile station device detects, in a single physicaldownlink control channel, downlink control information that instructstransmission of a single physical downlink shared channel only on aprimary cell, processing of transmitting the HARQ-ACK and/or the channelstate information to the base station device according to the firstparameter; and if the mobile station device detects, in a singlephysical downlink control channel, downlink control information thatinstructs transmission of a single physical downlink shared channel on asecondary cell, processing of transmitting the HARQ-ACK and/or thechannel state information to the base station device according to thesecond parameter.

Alternatively, there is provided an integrated circuit that is mountedon a mobile station device, which communicates with a base stationdevice, and that causes the mobile station device to execute processing,the processing including processing of receiving a first parameterrelating to simultaneous transmission of HARQ-ACK and channel stateinformation and a second parameter relating to simultaneous transmissionof the HARQ-ACK and the channel state information from the base stationdevice; if the mobile station device detects, in a single physicaldownlink control channel, downlink control information that instructstransmission of a single physical downlink shared channel only on aprimary cell, processing of transmitting the HARQ-ACK and/or the channelstate information to the base station device according to the firstparameter; and if the mobile station device detects, in a physicaldownlink control channel, downlink control information that instructstransmission of a physical downlink shared channel on at least a singlesecondary cell, processing of transmitting the HARQ-ACK and/or thechannel state information to the base station device according to thesecond parameter.

The embodiment of the invention has been described above with referenceto the drawings. However, the specific configuration is not limited tothis embodiment, and the claims may include design etc. within the scopeof the invention.

REFERENCE SIGNS LIST

100 base station device

101 data control unit

102 transmission data modulating unit

103 radio unit

104 scheduling unit

105 channel estimating unit

106 reception data demodulating unit

107 data extracting unit

108 higher layer

109 antenna

110 radio resource control unit

200 mobile station device

201 data control unit

202 transmission data modulating unit

203 radio unit

204 scheduling unit

205 channel estimating unit

206 reception data demodulating unit

207 data extracting unit

208 higher layer

209 antenna

210 radio resource control unit

The invention claimed is:
 1. A mobile station device that communicateswith a base station device using a plurality of serving cells, whereinthe plurality of serving cells includes a primary cell and at least onesecondary cell, the mobile station device comprising: a receiving unitconfigured to: receive a first parameter that is used for allowingsimultaneous transmission of Hybrid Automatic Repeat Request (HARQ)control information and channel state information; receive a secondparameter that is used for allowing simultaneous transmission of theHARQ control information and the channel state information using asecond physical uplink control channel format; and a determining unitconfigured to determine whether the channel state informationmultiplexed with the HARQ control information is transmitted using afirst physical uplink control channel format, the channel stateinformation multiplexed with the HARQ control is transmitted using thesecond physical uplink control channel format, or the channel stateinformation is dropped, with the reference to the first parameter, thesecond parameter, and whether or not a single physical downlink sharedchannel transmission only on the primary cell indicated by a detectionof a physical downlink control channel is received, in a case ofcollision between the HARQ control information and the channel stateinformation in a same sub-frame without a physical uplink sharedchannel.
 2. The mobile station device according to claim 1, wherein inthe case of collision between the HARQ control information and thechannel state information in the sub-frame without the physical uplinkshared channel, if the simultaneous transmission of the HARQ controlinformation and the channel state information is allowed using the firstparameter and if the single physical downlink shared channeltransmission only on the primary cell indicated by the detection of thephysical downlink control channel is received, the channel stateinformation multiplexed with the HARQ control information is transmittedusing the first physical uplink control channel format.
 3. The mobilestation device according to claim 1, wherein in the case of collisionbetween the HARQ control information and the channel state informationin the sub-frame without the physical uplink shared channel, if thesimultaneous transmission of the HARQ control information and thechannel state information using the second physical uplink controlchannel format is allowed using the second parameter, the channel stateinformation multiplexed with the HARQ control information is transmittedusing the second physical uplink control channel format.
 4. The mobilestation device according to claim 1, wherein in the case of thecollision between the HARQ control information and the channel stateinformation in the sub-frame without the physical uplink shared channel,if the simultaneous transmission of the HARQ control information and thechannel state information is not allowed the first parameter and if thesimultaneous transmission of the HARQ control information and thechannel state information using the second physical uplink controlchannel format is not allowed using the second parameter, the channelstate information is dropped.
 5. The mobile station device according toclaim 1, wherein a resource for the first physical uplink controlinformation format is set by a higher layer.
 6. The mobile stationdevice according to claim 1, wherein a resource for the second physicaluplink control information format is indicated using downlink controlinformation that is transmitted on the physical downlink controlchannel, the downlink control information being used for indicating theresource for the second physical uplink control information format fromfour resources set by the higher layer.
 7. The mobile station deviceaccording to claim 1, wherein the HARQ control information includesinformation indicative of a positive acknowledgment (ACK) or a negativeacknowledgment (NACK).
 8. The mobile station device according to claim1, wherein the channel state information includes channel stateinformation that is periodically transmitted.
 9. The mobile stationdevice according to claim 1, wherein the first physical uplink controlchannel format includes a physical uplink control channel format that ispossible to transmit coded bits of 20 bits per sub-frame.
 10. The mobilestation device according to claim 1, wherein the first physical uplinkcontrol channel format includes a physical uplink control informationformat that is possible to transmit the channel state informationmultiplexed with the HARQ-ACK of 1 bit.
 11. The mobile station deviceaccording to claim 1, wherein the first physical uplink control channelformat includes a physical uplink control channel format that ispossible to transmit coded bits of 21 bits per sub-frame.
 12. The mobilestation device according to claim 1, wherein the first physical uplinkcontrol channel format includes a physical uplink control informationformat that is possible to transmit the channel state informationmultiplexed with the HARQ-ACK of 2 bits.
 13. The mobile station deviceaccording to claim 1, wherein the first physical uplink control channelformat includes a physical uplink control channel format that ispossible to transmit coded bits of 22 bits per sub-frame.
 14. The mobilestation device according to claim 1, wherein the second physical uplinkcontrol channel format includes a physical uplink control channel formatthat is possible to transmit coded bits of 48 bits per sub-frame. 15.The mobile station device according to claim 1, wherein the secondphysical uplink control channel format includes a physical uplinkcontrol channel format that is possible to transmit uplink controlinformation of 22 bits at maximum.
 16. A method of a mobile stationdevice that communicates with a base station device using a plurality ofserving cells, wherein the plurality of serving cells includes a primarycell and at least one secondary cell, the method comprising: receiving afirst parameter that is used for allowing simultaneous transmission ofHybrid Automatic Repeat Request (HARQ) control information and channelstate information; receiving a second parameter that is used forallowing simultaneous transmission of the HARQ control information andthe channel state information using a second physical uplink controlchannel format; and determining whether the channel state informationmultiplexed with the HARQ control information is transmitted using afirst physical uplink control channel format, the channel stateinformation multiplexed with the relating HARQ control information istransmitted using the second physical uplink control channel format, orthe channel state information is dropped, with reference to the firstparameter, the second parameter, and whether or not a single physicaldownlink shared channel transmission only on the primary cell indicatedby a detection of a physical downlink control channel is received, in acase of collision between the HARQ control information and the channelstate information in a same sub-frame without a physical uplink sharedchannel.
 17. An integrated circuit that is mounted on a mobile stationdevice which communicates with a base station device using a pluralityof serving cells, wherein the plurality of serving cells includes aprimary cell and at least one secondary cell, and that causes the mobilestation device to execute processing, the processing comprising:processing of receiving a first parameter that is used for allowingsimultaneous transmission of Hybrid Automatic Repeat Request (HARQ)control information and channel state information; processing ofreceiving a second parameter that is used for allowing simultaneoustransmission of the HARQ control information and the channel stateinformation using a second physical uplink control channel format; andprocessing of determining whether the channel state informationmultiplexed with the control information is transmitted using a firstphysical uplink control channel format, the channel state informationmultiplexed with the HARQ control information is transmitted using thesecond physical uplink control channel format, or the channel stateinformation is dropped, with reference to the first parameter, thesecond parameter, and whether or not a single physical downlink sharedchannel transmission only on the primary cell indicated by a detectionof a physical downlink control channel is received, in a case ofcollision between the HARQ control information and the channel stateinformation in a same sub-frame without a physical uplink sharedchannel.